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No-one, and I mean
no-one has ever been
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near the bottom of this trench.
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We don't know what's down there.
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[Alan] I've never seen
anything like that.
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00:00:20,620 --> 00:00:23,255
[Rob] The sea temperature's
extremely warm.
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One of the first symptoms
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of heatstroke is people
acting irrationally.
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Hey, I'm going as fast
as I [bleep] can.
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He can't make it.
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[Victor]
Nothing on the sonar. [bleep]
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[Alan] Watch yourself,
watch yourself.
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[bleep]
Pull up, pull up, pull up!
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[Demetri] Humankind has explored
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every continent on Earth.
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We've climbed
its tallest mountains.
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And even journeyed into space.
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[man]
"Thank you, Mr. President."
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[Demetri]
But there's a vast swathe
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00:00:58,825 --> 00:01:00,092
of our own planet
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that has remained a mystery.
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The deep ocean.
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Stretching down over 35,000 feet
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into crushing pressures,
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it's been near
impossible to reach.
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Until now.
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New engineering breakthroughs
are driving an audacious
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global mission to dive
to the deepest points
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of all the five oceans
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for the first time in history.
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These pioneers
will push technology
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to the limit.
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- What the hell was that?
- We have leaking hatch.
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[Demetri] To open up
this final frontier
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as never before.
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[woman] Trying to mentally
put yourself at the bottom
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is just mind-blowing.
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[Demetri]
Mapping hidden landscapes,
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discovering unknown lifeforms.
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[Alan] What on earth is that?
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[Demetri]
And unlocking the secrets
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of how life
in the extreme deep ocean
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affects our entire planet.
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[dramatic music playing]
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[Demetri] Millionaire
explorer Victor Vescovo
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has spent the last four years
preparing and planning
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to make exploration history.
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I've been doing somewhat
risky things all my life.
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Coming up with a mission
that's never been done before
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is extremely exciting
and difficult
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and seeing it through
to its conclusion.
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[Demetri] Victor has set
himself the goal of being
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the first person to head
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to all five
of the earth's oceans,
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find their deepest points,
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and explore
their hidden secrets.
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So far, he has completed
two of the five.
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Overcoming storms
in the Atlantic
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to find new species...
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- At bottom.
- Yeah!
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[Demetri] ...and braving
freezing waters
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to triumph
in the Southern Ocean.
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- [man] Great job.
- [Patrick] All right, Victor!
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[Demetri] Their third deep
dive is in the Indian Ocean.
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00:03:07,754 --> 00:03:10,489
This is the youngest
of the oceans.
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It's also the warmest,
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with an average surface
temperature of 90 degrees
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Fahrenheit.
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00:03:18,898 --> 00:03:20,766
Beneath the waves, the sea floor
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is one of the most geologically
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volatile areas in the world.
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A landscape
of unpredictable faults,
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fractures and earthquakes
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that over the last
few decades has generated
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five of history's
deadliest tsunamis.
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[man] Get in! Get in! Get in!
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[Demetri]
The ocean's deepest point
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lies at the epicenter
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of a tsunami trigger zone.
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The Java Trench.
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00:03:51,097 --> 00:03:54,866
Where two giant plates
in the earth's crust collide.
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00:03:56,636 --> 00:03:58,604
A crucial part
of Victor's mission
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will be to search
for evidence on the sea floor
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of what is causing the tsunamis.
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[Victor] The more data we have
from the deep oceans
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the better our models could be
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00:04:08,581 --> 00:04:11,049
to predict these things.
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00:04:11,084 --> 00:04:14,786
No-one, and I mean no-one
has ever been
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00:04:14,821 --> 00:04:15,988
near the bottom of this trench,
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00:04:16,022 --> 00:04:17,456
or even explored it.
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00:04:17,490 --> 00:04:19,691
We don't know what's down there.
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[Demetri]
At over 23,000 feet deep,
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the pressure will be immense.
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00:04:27,133 --> 00:04:30,202
Any ordinary sub
would simply implode.
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00:04:32,238 --> 00:04:36,341
So Victor has commissioned
a pioneering new design.
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- Go ahead and jack it up.
- [man] Roger.
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[Demetri] Its secret strength
lies at its core.
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The cockpit is a ball
of 3.5-inch thick titanium.
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If this wasn't a perfect sphere,
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00:04:49,422 --> 00:04:52,658
it could crumple like a tin can.
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00:04:52,692 --> 00:04:54,893
Inside, a rack of oxygen tanks
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provides up to 96 hours
of emergency life support.
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[Victor]
If someone needs to go down
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00:05:01,100 --> 00:05:02,134
to the bottom of the ocean,
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00:05:02,168 --> 00:05:03,635
there's submarine jet.
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00:05:03,670 --> 00:05:05,504
It's now the deepest-diving
submersible in the world.
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00:05:05,538 --> 00:05:07,406
In fact, it's actually
the deepest-diving
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00:05:07,440 --> 00:05:09,808
vehicle, period.
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00:05:09,842 --> 00:05:11,143
[Rob] You know,
I think the submersible
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00:05:11,177 --> 00:05:12,377
is the most significant
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00:05:12,412 --> 00:05:14,579
vehicle since Apollo 11.
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This is a vehicle
that will allow us
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to explore
the last frontier on Earth.
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[Demetri] But if something
serious goes wrong
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at full ocean depth,
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there's no hope of rescue.
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[Victor] It's the only thing
in the world
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right now that can go
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below 7,000 meters. Not even
a remotely-piloted vehicle
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can do that.
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We're getting the tow line off.
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[Demetri] And the sub is still
very much a prototype.
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Let it go.
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[Demetri]
In the first two ocean dives,
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the sub team faced
a massive learning curve.
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[Patrick]
Surface systems all up.
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We have leaking hatch.
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[Kelvin] There's a reason why
nobody has done this before.
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It's not easy.
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It's going to an extreme
environment.
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There's no rescue plan.
This has to come back.
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It has to work.
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Up on the main,
whoa, whoa, whoa, whoa!
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[bleep]
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00:05:59,759 --> 00:06:01,693
It's sort of testing
by breaking.
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00:06:01,728 --> 00:06:02,761
Back on the tag line.
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00:06:04,964 --> 00:06:07,032
[bleep] Why are we doing this?
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[Victor] And there's always
a lot of heartache
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in that process,
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because for every two steps
you take forward...
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[bleep]
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[Victor]
...you've got to come back
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and relearn one of them.
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[man] What am I supposed to do?
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[bleep]
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It can take up to 30
or even 40 dives
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with a brand-new submersible,
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especially one designed
with these extreme features,
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to get it to where
things are working well.
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[Patrick] Okay, you guys ready?
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Roger, go ahead.
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[Demetri] Even if the sub
is fully operational,
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the team face a major hazard
of the Indian Ocean.
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It's tropical cyclone season.
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[Rob] The sea temperature
at the moment is about
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30, 31 degrees Celsius,
which is extremely warm.
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And warm water
is the fuel of cyclones.
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The pressure is on
to complete the mission
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before a cyclone forces them
to seek shelter.
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First, the team need to use
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their high-resolution
sonar scanner
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to map the uncharted depths
of the Java Trench
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and pinpoint
the precise location
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of the deepest point
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of the Indian Ocean.
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[Victor] It's one of the most
advanced sonars in the world.
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It's actually military grade.
And it has the capability
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to acoustically survey
the bottom of the ocean
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all the way to full ocean
depth and map it.
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[Demetri] The early scans
are already revealing
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crucial new evidence
to help a key mission
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of this expedition.
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The search for the causes
of the deadly
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Indian Ocean tsunamis.
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[man] In that northern wall,
we've found at least 14
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slope failures.
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Some of those are four
or five kilometers wide,
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where big chunks essentially
come loose during earthquakes
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and slump to the sea floor.
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And they can be responsible
for tsunamis.
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[Demetri]
Monster landslides like these
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displace vast amounts
of water that on the surface
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turn into devastating tsunamis.
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The scans have also revealed
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a near-vertical cliff
that may be the site
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of the next
catastrophic collapse.
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What we need to do
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is actually go down
and get some eyes on that
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and try and find out
whether these areas
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are about to fall,
or if we've got areas
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that fell a long time ago
and the whole area
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is actually quite stable.
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[Demetri] The team decide
to add to their mission
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a research dive
down to this cliff.
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[Patrick]
The sonar has identified
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a key geological feature
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which otherwise
would not have been found.
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And you have the tool
to go and dive on it.
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- So this is great.
- This is what we're here for,
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to find things like this.
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[Demetri] It's a one-off
opportunity to explore
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00:08:44,790 --> 00:08:46,825
the dark secrets
of the Indian Ocean.
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But it will be the first time
the sub has had to navigate
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so close to a potentially
hazardous rock face.
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[Victor] It's kinda hard
to get a sense
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of angle when you're down there
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because your field of view
is only about 10 or 15 meters.
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[Demetri] Victor decides
to put at the sub's helm
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00:09:02,808 --> 00:09:05,410
the most experienced
sub pilot on board
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00:09:05,444 --> 00:09:07,345
and the builder
of the sub itself,
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Patrick Lahey.
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[Victor] You'll go down,
and you'll try
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and find the wall first.
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We should have a plan
and stick to that plan.
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The priority is get a lovely
video of that slope.
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[Demetri] Chief scientist
Alan Jamieson
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will join Patrick
to guide the search.
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[Kelvin]
All right, see you, guys.
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00:09:26,832 --> 00:09:28,366
Hatch secured.
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00:09:29,635 --> 00:09:32,304
Okay, LF, swimmer's clear,
you're clear to dive.
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00:09:32,338 --> 00:09:34,739
Roger that. I got a green board.
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[Alan] We're away.
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00:09:47,153 --> 00:09:49,621
[Demetri] Two and half hours
after leaving the surface,
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00:09:49,655 --> 00:09:52,290
and over 22,000 feet down,
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finally their target
comes into view.
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00:09:56,162 --> 00:09:58,930
Whoa. There's the wall.
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[Alan] We've got some rocks.
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00:10:00,733 --> 00:10:02,467
A lot of boulders.
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00:10:02,501 --> 00:10:04,769
We're gonna
take it easy here now.
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00:10:06,539 --> 00:10:10,875
[Demetri] The cliff towers
over 600 feet above them.
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00:10:10,910 --> 00:10:13,812
Patrick will need
to be extremely careful.
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A sudden rockfall could put
the sub in serious danger.
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00:10:18,518 --> 00:10:19,751
And down here,
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00:10:19,785 --> 00:10:22,020
there's no other submersible
in the world
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00:10:22,054 --> 00:10:24,189
that can come to the rescue.
235
00:10:25,524 --> 00:10:27,759
Wow, it's steep.
I have to give it
236
00:10:27,793 --> 00:10:30,028
a little vertical up there,
buddy.
237
00:10:32,465 --> 00:10:34,633
Oh, there's a...
Excuse me, look at that.
238
00:10:34,667 --> 00:10:36,735
Big boulders to my right there.
239
00:10:36,769 --> 00:10:40,171
[Alan] Whoa, whoa, whoa, whoa,
we need to back off.
240
00:10:40,206 --> 00:10:42,140
This is a massive overhang.
241
00:10:43,709 --> 00:10:46,478
Back off. Watch yourself,
watch yourself.
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00:10:46,512 --> 00:10:48,546
Pull up, pull up, pull up!
[bleep]
243
00:10:57,723 --> 00:11:00,025
[Demetri] Scientist Alan
and sub builder Patrick
244
00:11:00,059 --> 00:11:02,827
are diving into an active
geological faultline
245
00:11:02,862 --> 00:11:05,130
where no-one has been before.
246
00:11:05,164 --> 00:11:06,464
[Alan] Watch yourself.
Watch yourself.
247
00:11:06,499 --> 00:11:08,600
[Patrick] I'm backing away, man.
248
00:11:13,239 --> 00:11:15,306
[Demetri] They are seizing
a unique opportunity
249
00:11:15,341 --> 00:11:16,875
to investigate the origins
250
00:11:16,909 --> 00:11:19,144
of deadly Indian Ocean tsunamis
251
00:11:19,178 --> 00:11:22,113
triggered by massive
underwater landslides.
252
00:11:23,482 --> 00:11:26,518
Could this precarious wall
be the next disaster
253
00:11:26,552 --> 00:11:28,687
waiting to happen?
254
00:11:28,721 --> 00:11:30,021
Those are big chunks of...
255
00:11:30,056 --> 00:11:31,790
looks like volcanic rock, right?
256
00:11:31,824 --> 00:11:32,957
Yeah.
257
00:11:34,293 --> 00:11:35,460
[Heather]
We see these black rocks,
258
00:11:35,494 --> 00:11:36,628
and these are rocks
259
00:11:36,662 --> 00:11:38,797
that were once molten,
and they've cooled down
260
00:11:38,831 --> 00:11:41,066
and they're black because
261
00:11:41,100 --> 00:11:42,567
they've cooled down
really quickly
262
00:11:42,601 --> 00:11:45,403
so they've been erupted
onto the sea floor.
263
00:11:45,438 --> 00:11:47,238
[Patrick]
Just creep up the wall here.
264
00:11:47,273 --> 00:11:48,807
It's gonna bring us in closer.
265
00:11:50,042 --> 00:11:52,610
Look how precarious
this rock is.
266
00:11:52,645 --> 00:11:54,757
This is a great big tower, this.
267
00:11:54,781 --> 00:11:56,181
[Alan] You can see from that,
268
00:11:56,215 --> 00:11:58,650
it's not gonna take much of a
rumble for that to collapse.
269
00:11:58,684 --> 00:12:00,418
[Demetri] A landslide here
270
00:12:00,453 --> 00:12:03,421
and the sub could be buried
under a cascade of rocks
271
00:12:03,456 --> 00:12:04,923
and sediment.
272
00:12:04,957 --> 00:12:05,890
- [thud]
- [Patrick] Whoa.
273
00:12:05,925 --> 00:12:07,525
What the hell was that?
274
00:12:11,330 --> 00:12:15,400
[man] LF, could you send me
a status update?
275
00:12:15,434 --> 00:12:18,403
[static]
276
00:12:22,441 --> 00:12:25,810
[man] LF,
could you repeat your last?
277
00:12:32,151 --> 00:12:33,651
I'm backing off.
278
00:12:40,693 --> 00:12:42,861
Whoa.
279
00:12:42,895 --> 00:12:45,396
Wow! Look at the colors
of the rocks.
280
00:12:45,431 --> 00:12:47,132
[Alan] Stunning.
281
00:12:47,166 --> 00:12:49,300
[Heather] Something
that I wasn't expecting
282
00:12:49,335 --> 00:12:52,237
are these multi-colored areas
283
00:12:52,271 --> 00:12:55,106
of what look
to be bacterial mats.
284
00:12:55,141 --> 00:12:56,975
Bright whites, oranges.
285
00:12:57,009 --> 00:12:58,543
There's even some blues
in there.
286
00:12:58,577 --> 00:13:02,313
Really spectacular colors.
These are bacteria
287
00:13:02,348 --> 00:13:06,718
living off the fluid that is
coming out of the sea floor.
288
00:13:06,752 --> 00:13:09,354
[Demetri] It is an
extraordinary form of life,
289
00:13:09,388 --> 00:13:11,656
feeding on the seabed itself.
290
00:13:11,690 --> 00:13:14,125
And it's the first time
anyone has seen it
291
00:13:14,160 --> 00:13:17,262
at such enormous depths
in the Indian Ocean.
292
00:13:17,296 --> 00:13:20,098
Yeah, certainly flat now.
293
00:13:20,132 --> 00:13:22,200
[Demetri] The mission
has given the expedition
294
00:13:22,234 --> 00:13:23,968
a remarkable insight into
295
00:13:24,003 --> 00:13:26,471
one of the most volatile
geological hotspots
296
00:13:26,505 --> 00:13:28,206
in the world.
297
00:13:29,742 --> 00:13:31,442
[Heather] Actually
getting eyes on the seabed
298
00:13:31,477 --> 00:13:34,746
and looking at some of these
mass movements
299
00:13:34,780 --> 00:13:37,482
and the block failures,
we can start to
300
00:13:37,516 --> 00:13:40,084
piece together
with a bit more certainty
301
00:13:40,119 --> 00:13:42,253
the different processes going on
302
00:13:42,288 --> 00:13:43,822
in the Java Trench.
303
00:13:43,856 --> 00:13:47,425
Some of these are related
to potential tsunamis
304
00:13:47,459 --> 00:13:50,028
in the future
or indeed in the past.
305
00:13:50,062 --> 00:13:52,664
We've done our job, right?
We found the wall.
306
00:13:52,698 --> 00:13:55,066
[Patrick]
Surface, LF. Present depth,
307
00:13:55,100 --> 00:13:57,402
at the top of the wall.
308
00:13:57,436 --> 00:14:00,505
[cheering]
309
00:14:00,539 --> 00:14:02,340
Whoo! Excellent.
310
00:14:02,374 --> 00:14:04,909
I'm so happy for them.
311
00:14:04,944 --> 00:14:08,213
[Hob] Surface, LF.
Requesting permission
312
00:14:08,247 --> 00:14:11,783
- to leave bottom.
- Roger that.
313
00:14:11,817 --> 00:14:14,786
Releasing surfacing
weight now. Here we go.
314
00:14:21,927 --> 00:14:23,461
[Demetri]
Despite a few scratches
315
00:14:23,495 --> 00:14:25,263
to the sub's outer housing,
316
00:14:25,297 --> 00:14:27,899
the dive has been
a huge success.
317
00:14:29,401 --> 00:14:31,970
- [man] Coming down.
- [man] Coming down. Okay.
318
00:14:32,004 --> 00:14:33,538
[Demetri]
But as well as studying
319
00:14:33,572 --> 00:14:35,073
the geology of the trench,
320
00:14:35,107 --> 00:14:38,576
Chief Scientist Alan Jamieson
is also eager to explore,
321
00:14:38,610 --> 00:14:41,913
for the very first time,
what lifeforms have adapted
322
00:14:41,947 --> 00:14:44,115
to live in its crushing depths.
323
00:14:44,149 --> 00:14:45,550
[Alan] The Indian Ocean's
kind of renowned
324
00:14:45,584 --> 00:14:48,152
for having never been properly
325
00:14:48,187 --> 00:14:50,922
studied, and that's the same
for the shallow water,
326
00:14:50,956 --> 00:14:53,358
never mind
the very, very deep water.
327
00:14:55,728 --> 00:14:58,863
[Demetri] A set of underwater
probes known as landers
328
00:14:58,898 --> 00:15:00,465
packed with technology
329
00:15:00,499 --> 00:15:04,535
will use baited cameras
to film life on the seabed.
330
00:15:06,705 --> 00:15:08,806
The target is in an area
near the bottom
331
00:15:08,841 --> 00:15:10,842
of the Java Trench.
332
00:15:10,876 --> 00:15:12,477
But first, the probes must
333
00:15:12,511 --> 00:15:14,078
pass through ever deeper layers
334
00:15:14,113 --> 00:15:17,015
of the Indian Ocean,
where remarkable creatures
335
00:15:17,049 --> 00:15:19,284
find their home.
336
00:15:20,953 --> 00:15:23,187
From the Sunlight Zone,
where sunfish
337
00:15:23,222 --> 00:15:26,791
the size of pick-up trucks
bask on the surface...
338
00:15:29,762 --> 00:15:32,664
...and dugong, distant
relations of the elephant,
339
00:15:32,698 --> 00:15:34,599
graze on seagrass...
340
00:15:37,703 --> 00:15:39,270
...to the Twilight Zone,
341
00:15:39,305 --> 00:15:41,673
where monster six-gill sharks,
342
00:15:41,707 --> 00:15:44,175
unchanged from the time
of the dinosaurs,
343
00:15:44,209 --> 00:15:48,079
lurk during the day,
surfacing to hunt by night.
344
00:15:50,249 --> 00:15:51,783
And where leatherback turtles,
345
00:15:51,817 --> 00:15:53,384
the deepest-diving reptiles
346
00:15:53,419 --> 00:15:54,419
on the planet,
347
00:15:54,453 --> 00:15:57,622
come hunting for jellyfish.
348
00:15:57,656 --> 00:16:00,258
Their flexible shells
and collapsible lungs
349
00:16:00,292 --> 00:16:02,493
make them perfectly
adapted to survive
350
00:16:02,528 --> 00:16:05,263
the crushing pressures.
351
00:16:05,297 --> 00:16:06,531
Deeper still,
352
00:16:06,565 --> 00:16:08,933
into the Midnight Zone,
353
00:16:08,968 --> 00:16:12,136
where vampire squid
use their cape-like folds
354
00:16:12,171 --> 00:16:14,472
lined with tiny spines
355
00:16:14,506 --> 00:16:16,407
to protect themselves
against attack
356
00:16:16,442 --> 00:16:18,876
by deep-diving predatory fish.
357
00:16:21,113 --> 00:16:23,114
And slender snipe eels
358
00:16:23,148 --> 00:16:26,284
use microscopic hooked teeth
on their beak-like jaws
359
00:16:26,318 --> 00:16:30,154
to snare shrimp.
360
00:16:30,189 --> 00:16:32,090
Finally, the scientific probes
361
00:16:32,124 --> 00:16:35,326
reach the very deepest zone
of the Indian Ocean,
362
00:16:35,361 --> 00:16:36,828
the Hadal Zone.
363
00:16:41,800 --> 00:16:45,103
Now their cameras
are the very first in history
364
00:16:45,137 --> 00:16:48,206
to film in this
inhospitable landscape.
365
00:16:48,240 --> 00:16:49,974
And they capture rare footage
366
00:16:50,009 --> 00:16:52,343
of an elusive deep-ocean hunter.
367
00:16:59,385 --> 00:17:01,019
[Alan] Nobody really knows
anything about them.
368
00:17:01,053 --> 00:17:02,653
Their common name is assfish.
369
00:17:02,688 --> 00:17:05,556
- Not a great name.
- Not a great name.
370
00:17:05,591 --> 00:17:08,026
If you look, it's got
this double nostril here.
371
00:17:08,060 --> 00:17:09,260
It's got massive nostrils.
372
00:17:09,294 --> 00:17:10,395
It doesn't care about the bait.
373
00:17:10,429 --> 00:17:12,163
All it knows is,
where it can smell bait
374
00:17:12,197 --> 00:17:13,798
there's going to be
an accumulation of amphipods,
375
00:17:13,832 --> 00:17:17,668
so it turns up
and just picks them off.
376
00:17:17,703 --> 00:17:19,470
[Demetri] Once a crowd
of the shrimp-like
377
00:17:19,505 --> 00:17:22,607
scavengers arrive,
it's dinnertime.
378
00:17:30,549 --> 00:17:32,417
Then, from one of the darkest,
379
00:17:32,451 --> 00:17:34,585
most remote parts of the planet,
380
00:17:34,620 --> 00:17:36,654
comes the rarest of creatures.
381
00:17:36,688 --> 00:17:38,823
A Dumbo octopus.
382
00:17:38,857 --> 00:17:41,259
Remarkably,
it's the deepest octopus
383
00:17:41,293 --> 00:17:44,362
ever filmed
by almost 6,000 feet.
384
00:17:45,531 --> 00:17:47,231
Its tentacles
are joined together
385
00:17:47,266 --> 00:17:51,235
by a web of skin to form
an umbrella-like body.
386
00:17:51,270 --> 00:17:53,104
And the huge, ear-like fins
387
00:17:53,138 --> 00:17:54,772
that give the Dumbo its name
388
00:17:54,807 --> 00:17:58,976
help to make it
an extremely agile swimmer.
389
00:17:59,011 --> 00:18:02,380
It's waiting for the bait
to lure its favorite meal.
390
00:18:03,582 --> 00:18:05,917
An unsuspecting
deep-sea crustacean
391
00:18:05,951 --> 00:18:09,087
is moving across the seabed.
392
00:18:09,121 --> 00:18:10,788
In such a pitch-black home,
393
00:18:10,823 --> 00:18:13,491
the Dumbo's eyes
are virtually sightless.
394
00:18:13,525 --> 00:18:16,194
Instead, it uses sensors
in its tentacles
395
00:18:16,228 --> 00:18:17,762
to pinpoint its prey.
396
00:18:23,569 --> 00:18:24,936
[Alan] Quite often, octopus do
397
00:18:24,970 --> 00:18:26,104
they will sit on top
of a crustacean
398
00:18:26,138 --> 00:18:27,371
and then they'll
bore a hole through it
399
00:18:27,406 --> 00:18:29,173
at the back of its shell
400
00:18:29,208 --> 00:18:30,641
and then will inject it
with saliva.
401
00:18:30,676 --> 00:18:32,743
And it dissolves the shrimp,
for example,
402
00:18:32,778 --> 00:18:34,312
from the inside
and then sucks it out.
403
00:18:34,346 --> 00:18:36,414
- That's disgusting.
- Right.
404
00:18:36,448 --> 00:18:38,249
[Demetri] The probes
have brought back
405
00:18:38,283 --> 00:18:41,486
remarkable images from the deep.
406
00:18:41,520 --> 00:18:44,222
And now the scanning team
have dramatic news
407
00:18:44,256 --> 00:18:47,558
for the expedition
of Victor's ultimate target.
408
00:18:47,593 --> 00:18:50,161
This tiny sinkhole
is the deepest point
409
00:18:50,195 --> 00:18:51,662
in the Indian Ocean.
410
00:18:51,697 --> 00:18:53,331
[Demetri] It will be
the most challenging
411
00:18:53,365 --> 00:18:55,199
of the deeps yet attempted.
412
00:18:55,234 --> 00:18:56,767
[Victor] We are going to drop
right into it
413
00:18:56,802 --> 00:18:58,603
almost like trying
to drop a marble
414
00:18:58,637 --> 00:19:01,205
into a bucket 50 meters down.
415
00:19:01,240 --> 00:19:02,807
My highest priority
416
00:19:02,841 --> 00:19:04,976
is getting you
safely back on board.
417
00:19:14,720 --> 00:19:16,854
[Demetri] The scanning team
have finished mapping
418
00:19:16,889 --> 00:19:20,224
the previously uncharted
reaches of the Java Trench.
419
00:19:20,259 --> 00:19:21,993
It is a critical moment
in the mission
420
00:19:22,027 --> 00:19:23,794
because the trench
might not hold
421
00:19:23,829 --> 00:19:26,831
the deepest point in the
Indian ocean after all.
422
00:19:26,865 --> 00:19:28,833
The team now need
to compare the data
423
00:19:28,867 --> 00:19:31,536
with a rival candidate
scanned on their way.
424
00:19:31,570 --> 00:19:34,138
A fracture zone
off the coast of Australia
425
00:19:34,173 --> 00:19:36,274
called Diamantina.
426
00:19:36,308 --> 00:19:38,342
[Cassie]
This yellow dot right here
427
00:19:38,377 --> 00:19:39,644
is the deepest point
428
00:19:39,678 --> 00:19:44,282
within this big basin
of Diamantina Fracture Zone.
429
00:19:44,316 --> 00:19:48,052
At 7,019 meters.
430
00:19:48,086 --> 00:19:50,922
[Demetri] If the Java Trench
turns out to be shallower,
431
00:19:50,956 --> 00:19:54,258
then the expedition
is 1,000 miles off course.
432
00:19:55,961 --> 00:19:58,362
[Victor] We continue
to learn new things.
433
00:19:58,397 --> 00:20:00,431
I think Cassie and her team
understated what they've done,
434
00:20:00,465 --> 00:20:03,467
but we have solved the mystery
that has always been around,
435
00:20:03,502 --> 00:20:04,969
which is
what is the deepest point
436
00:20:05,003 --> 00:20:06,470
in the Indian Ocean.
437
00:20:06,505 --> 00:20:07,738
Until this week,
438
00:20:07,773 --> 00:20:09,707
no-one could definitively
answer that question.
439
00:20:09,741 --> 00:20:11,008
In fact, there was a big debate
440
00:20:11,043 --> 00:20:13,244
whether it was the Diamantina
or the Java Trench.
441
00:20:16,682 --> 00:20:17,982
Well, it is the Java Trench.
442
00:20:18,016 --> 00:20:19,016
It's not just the Java Trench,
443
00:20:19,051 --> 00:20:20,785
it's in a place
no-one thought it was.
444
00:20:20,819 --> 00:20:24,088
It's in the center of it,
not the east or the west.
445
00:20:24,122 --> 00:20:25,923
[Demetri] But to reach
this deepest point
446
00:20:25,958 --> 00:20:28,559
will be a massive
navigational challenge.
447
00:20:30,329 --> 00:20:32,463
In the middle of the Java Trench
448
00:20:32,497 --> 00:20:35,600
is this tiny sinkhole
that we determined
449
00:20:35,634 --> 00:20:38,936
to be the deepest point
in the Indian Ocean.
450
00:20:38,971 --> 00:20:40,838
And Victor is finding that.
451
00:20:43,141 --> 00:20:46,143
[dramatic music playing]
452
00:20:49,081 --> 00:20:50,748
[Victor] We're gonna drop
right into it.
453
00:20:50,782 --> 00:20:51,849
Almost like trying to drop
454
00:20:51,883 --> 00:20:54,986
a marble into a bucket
50 meters down.
455
00:20:56,355 --> 00:20:58,089
This one
you could actually miss.
456
00:21:00,425 --> 00:21:03,160
[Demetri] If the team get
their calculations wrong,
457
00:21:03,195 --> 00:21:06,631
Victor will be navigating
a dangerously rocky landscape
458
00:21:06,665 --> 00:21:08,966
with the risk
of a damaging collision.
459
00:21:12,371 --> 00:21:13,537
[man] Coming up easy.
460
00:21:13,572 --> 00:21:15,373
[Demetri]
To help Victor find his way,
461
00:21:15,407 --> 00:21:17,708
the team drop
one of their robotic probes
462
00:21:17,743 --> 00:21:19,910
directly above
the deepest point.
463
00:21:22,881 --> 00:21:25,082
It has an on board modem
to communicate
464
00:21:25,117 --> 00:21:28,753
with the ship and the sub.
465
00:21:28,787 --> 00:21:30,921
Victor will then
have to find the probe
466
00:21:30,956 --> 00:21:33,424
to reach the deepest point.
467
00:21:33,458 --> 00:21:35,493
Normally, two other probes
are also launched
468
00:21:35,527 --> 00:21:36,927
to other sites on the seabed
469
00:21:36,962 --> 00:21:40,464
to help calculate
Victor's exact position.
470
00:21:40,499 --> 00:21:41,799
On this dive,
471
00:21:41,833 --> 00:21:43,467
the team are gambling
that Victor
472
00:21:43,502 --> 00:21:46,370
can navigate alone.
473
00:21:46,405 --> 00:21:49,473
We don't have a vast,
open plane down there.
474
00:21:49,508 --> 00:21:50,841
We thought we'd put the lander
475
00:21:50,876 --> 00:21:52,476
directly over
on top of the target,
476
00:21:52,511 --> 00:21:53,844
and you directly on the target.
477
00:21:53,879 --> 00:21:55,746
Without the landers
to triangulate
478
00:21:55,781 --> 00:21:58,482
we won't be able to guide him
to the actual position.
479
00:21:58,517 --> 00:22:00,618
So it is a little bit riskier.
480
00:22:00,652 --> 00:22:03,988
If he sees the lander, then
he's at the deepest point.
481
00:22:04,022 --> 00:22:06,390
[Demetri] With the probe now
signaling from the seabed,
482
00:22:06,425 --> 00:22:08,159
the team need to launch Victor
483
00:22:08,193 --> 00:22:10,795
as quickly as they can.
484
00:22:10,829 --> 00:22:13,397
The tropical cyclone seen
brewing on the horizon
485
00:22:13,432 --> 00:22:16,267
is now gathering strength
and threatening to end
486
00:22:16,301 --> 00:22:18,202
the multi-million-dollar
expedition
487
00:22:18,236 --> 00:22:19,837
before Victor has had a chance
488
00:22:19,871 --> 00:22:21,339
to complete his dive.
489
00:22:24,343 --> 00:22:26,143
[Rob] So it's a large
storm system,
490
00:22:26,178 --> 00:22:28,446
it's about 300 miles across.
491
00:22:30,315 --> 00:22:33,451
It's generating this huge
vortex, the cyclone.
492
00:22:33,485 --> 00:22:37,088
Running at about 65 knots,
maybe 75 knots.
493
00:22:37,122 --> 00:22:39,590
And waves
of six to eight meters.
494
00:22:39,624 --> 00:22:42,193
And we are just up in this area.
495
00:22:42,227 --> 00:22:44,428
There's an element of chance
in all of this,
496
00:22:44,463 --> 00:22:46,931
because it depends
on where the cyclone
497
00:22:46,965 --> 00:22:50,034
is drawing its fuel from
as to where it'll hit.
498
00:22:50,068 --> 00:22:52,169
We can't dally too long here.
499
00:22:52,204 --> 00:22:54,238
It could make life a little
bit difficult for us.
500
00:22:54,272 --> 00:22:55,639
[Rob] Here in the tropics,
501
00:22:55,674 --> 00:22:57,675
we can usually find
somewhere to hide.
502
00:22:57,709 --> 00:23:00,611
But of course that will rob us
of any chance to do a dive.
503
00:23:00,645 --> 00:23:02,546
The nightmare scenario for me
is the weather
504
00:23:02,581 --> 00:23:04,615
picks up
very quickly, very late,
505
00:23:04,649 --> 00:23:07,585
and then we have trouble
recovering it.
506
00:23:07,619 --> 00:23:10,287
[Demetri] If Victor is going
to become the first person
507
00:23:10,322 --> 00:23:12,022
to touch down
at the deepest point
508
00:23:12,057 --> 00:23:13,457
in the Indian Ocean,
509
00:23:13,492 --> 00:23:15,059
the team need
to get him launched
510
00:23:15,093 --> 00:23:18,963
as quickly as possible.
511
00:23:18,997 --> 00:23:20,331
[Kelvin] Roger that.
512
00:23:24,202 --> 00:23:27,004
[Patrick]
Okay, Victor, ready for you.
513
00:23:27,038 --> 00:23:28,906
[Kelvin]
Okay, grab that, grab that.
514
00:23:37,048 --> 00:23:39,950
[Victor] This is the LF,
life support is on and good.
515
00:23:39,985 --> 00:23:42,286
I have a green board.
I am good to launch.
516
00:23:42,320 --> 00:23:43,554
[Patrick] Roger that.
517
00:23:49,327 --> 00:23:52,563
Swimmer is clear.
You are clear to dive.
518
00:23:52,597 --> 00:23:54,632
[Victor] Swimmer is clear.
Enabling thrusters.
519
00:24:00,472 --> 00:24:03,374
- [Tim] And he's gone.
- [man] Whoo! Nice.
520
00:24:07,879 --> 00:24:11,682
[Victor]
All right, we are descending.
521
00:24:11,716 --> 00:24:13,184
This seems
a little slower than it did
522
00:24:13,218 --> 00:24:13,918
in the Southern Ocean.
523
00:24:13,952 --> 00:24:16,821
16 meters per minute.
524
00:24:16,855 --> 00:24:18,189
That's pretty slow.
525
00:24:18,223 --> 00:24:19,890
This could take a while
to get down.
526
00:24:23,862 --> 00:24:27,865
[Victor] Present depth,
eight-four-niner meters.
527
00:24:29,868 --> 00:24:31,735
[Patrick]
That's awfully slow, isn't it?
528
00:24:33,972 --> 00:24:35,873
[Tim] It's 0.7,
so 0.7 meters a second
529
00:24:35,907 --> 00:24:38,809
is 42 meters a minute.
530
00:24:43,715 --> 00:24:47,251
He went 400 meters in...
531
00:24:47,285 --> 00:24:51,121
15 minutes. That does seem slow.
532
00:24:51,156 --> 00:24:53,324
[Victor] Seven-seven.
533
00:24:53,358 --> 00:24:55,326
[Patrick] [bleep] Wow.
534
00:24:55,360 --> 00:24:57,628
Roger. One-zero-seven-seven.
535
00:24:59,464 --> 00:25:01,732
- [bleep]
- [Victor] Roger.
536
00:25:01,766 --> 00:25:03,467
He's going real [bleep] slow.
537
00:25:03,502 --> 00:25:05,836
Something's not right. [bleep]
538
00:25:16,414 --> 00:25:18,249
[Demetri] With
a mission-critical cyclone
539
00:25:18,283 --> 00:25:20,751
building over the horizon,
540
00:25:20,785 --> 00:25:23,387
Victor's attempt to be
the first person in history
541
00:25:23,421 --> 00:25:26,056
to visit the deepest point
of the Indian Ocean
542
00:25:26,091 --> 00:25:29,159
is in serious danger
of unraveling.
543
00:25:29,194 --> 00:25:31,862
He's going real [bleep] slow.
544
00:25:31,897 --> 00:25:33,130
Something's wrong.
545
00:25:35,967 --> 00:25:37,434
[Demetri]
The sub is dragged down
546
00:25:37,469 --> 00:25:39,904
through the water
by a set of steel weights
547
00:25:39,938 --> 00:25:42,506
held in place
by two electromagnets.
548
00:25:44,976 --> 00:25:46,577
The weights need
to be heavy enough
549
00:25:46,611 --> 00:25:49,446
to override the specialist
buoyant foam blocks
550
00:25:49,481 --> 00:25:52,449
that will ultimately pull
the sub back to the surface.
551
00:25:55,353 --> 00:25:58,889
[Patrick] I can only assume
that something's dropped off.
552
00:26:00,625 --> 00:26:01,859
That's the only thing it can be.
553
00:26:01,893 --> 00:26:04,128
I suspect that one
of the magnets has failed.
554
00:26:04,162 --> 00:26:05,162
Which was the one that had
555
00:26:05,196 --> 00:26:06,297
the little bit
of corrosion on it?
556
00:26:06,331 --> 00:26:08,532
It was the aft one.
557
00:26:08,567 --> 00:26:10,100
I cleaned that all up
this morning.
558
00:26:10,135 --> 00:26:12,903
[Patrick] So, you know,
we are just burning daylight.
559
00:26:16,074 --> 00:26:17,274
We are half-way there
in two hours.
560
00:26:17,342 --> 00:26:19,143
[bleep] this is going
to take four hours.
561
00:26:22,581 --> 00:26:24,782
[Demetri] Patrick,
as mission control chief,
562
00:26:24,816 --> 00:26:28,752
now has a difficult call
to make.
563
00:26:28,787 --> 00:26:32,456
To risk a lengthy dive,
or pull the plug,
564
00:26:32,490 --> 00:26:34,158
get the sub back on the surface,
565
00:26:34,192 --> 00:26:36,126
and hope there's time
for a second attempt
566
00:26:36,161 --> 00:26:37,995
before the cyclone hits.
567
00:26:38,029 --> 00:26:41,432
[Victor] I am still in descent,
568
00:26:41,466 --> 00:26:45,135
could make bottom,
could make bottom.
569
00:26:48,673 --> 00:26:49,807
Roger that.
570
00:26:49,841 --> 00:26:52,743
Uh, Victor,
I'm recommending an abort.
571
00:26:55,180 --> 00:26:58,115
I do not believe
you can reach the bottom.
572
00:27:01,519 --> 00:27:04,355
Understand, you suggest abort.
573
00:27:05,991 --> 00:27:08,659
Pretty disappointed.
574
00:27:08,693 --> 00:27:10,227
[Stuart] Control bridge.
575
00:27:10,261 --> 00:27:13,130
[Patrick] Okay Stu be advised
he has been given clearance
576
00:27:13,164 --> 00:27:15,466
to surface, ETA is just
a couple of minutes.
577
00:27:15,500 --> 00:27:17,835
Yeah bridge copy.
578
00:27:17,869 --> 00:27:20,004
[Rob] Roger that. Let's roll.
579
00:27:26,077 --> 00:27:27,511
- [Victor] Hey.
- [Tim] Hello.
580
00:27:27,545 --> 00:27:28,779
[Victor] Hey how you doing?
581
00:27:28,813 --> 00:27:30,047
[Tim] Good to see you back
in one piece.
582
00:27:30,081 --> 00:27:32,383
[Victor] Good to be back.
583
00:27:32,417 --> 00:27:35,285
[Demetri] The pressure is on
to get the sub fixed quick,
584
00:27:35,320 --> 00:27:37,221
and make a second dive.
585
00:27:40,692 --> 00:27:42,292
[Tim] Pissing out oil
from that clamp,
586
00:27:42,327 --> 00:27:43,427
it's all twisted.
587
00:27:43,461 --> 00:27:46,530
Can I get some little cutters?
Dites.
588
00:27:46,564 --> 00:27:47,798
[Victor] It's a complex system.
589
00:27:47,832 --> 00:27:48,932
There are many, many elements,
590
00:27:48,967 --> 00:27:50,067
whether it's the ballast system.
591
00:27:50,101 --> 00:27:51,435
One, two, three.
592
00:27:51,469 --> 00:27:53,837
[Victor] Or whether it's
the communication system.
593
00:27:53,872 --> 00:27:55,039
[Patrick]
Okay, are you guys ready?
594
00:27:55,073 --> 00:27:56,273
[Frank]
I don't know what the [bleep]
595
00:27:56,307 --> 00:27:57,574
Is going on here.
596
00:27:57,609 --> 00:27:59,643
There are so many things
that have to work just right
597
00:27:59,711 --> 00:28:03,047
for this ballet to come off
without a hitch.
598
00:28:03,081 --> 00:28:04,581
[Demetri]
But in boiling temperatures
599
00:28:04,616 --> 00:28:06,984
pushing 84 degrees Fahrenheit,
600
00:28:07,018 --> 00:28:09,853
the sub engineering team
are nearing breaking point.
601
00:28:09,888 --> 00:28:12,690
[Frank] Okay. I'm going
as fast as I [bleep] can.
602
00:28:12,724 --> 00:28:14,058
[Victor] There is a lot
of stress on people
603
00:28:14,092 --> 00:28:15,592
to get everything right.
604
00:28:15,627 --> 00:28:19,396
[Tim] Frank, turn it off.
605
00:28:19,431 --> 00:28:20,698
Had enough, man.
606
00:28:20,732 --> 00:28:22,099
Ready to go home.
607
00:28:22,133 --> 00:28:23,233
[Patrick] Hang on just a second.
608
00:28:23,268 --> 00:28:25,069
We've got a hose
trapped in there.
609
00:28:25,103 --> 00:28:26,637
[Victor] I think people
are learning, you know,
610
00:28:26,671 --> 00:28:27,871
kind of what they have to do
611
00:28:27,906 --> 00:28:29,239
and how much attention
to detail they have
612
00:28:29,274 --> 00:28:31,208
to have to make it
all work right.
613
00:28:31,242 --> 00:28:32,543
[Demetri]
While the engineering crew
614
00:28:32,577 --> 00:28:35,412
work overnight to fix the sub,
615
00:28:35,447 --> 00:28:38,148
the scanning team
have found stunning new data
616
00:28:38,183 --> 00:28:40,951
in the trench, revealing
a second explanation
617
00:28:40,985 --> 00:28:44,655
for the devastating
Indian Ocean tsunamis.
618
00:28:44,689 --> 00:28:45,956
- That's one there, right?
- Yeah.
619
00:28:45,990 --> 00:28:48,826
I think it's a faulted seamount.
620
00:28:48,893 --> 00:28:52,096
[Demetri] A series of massive
hills on the trench floor,
621
00:28:52,130 --> 00:28:54,665
extinct volcanoes
known as "seamounts",
622
00:28:54,699 --> 00:28:57,901
that act like
ticking time bombs.
623
00:28:57,936 --> 00:28:59,937
We've identified
a number of seamounts
624
00:28:59,971 --> 00:29:02,773
that are in the process
of being consumed
625
00:29:02,807 --> 00:29:05,909
in the trench axis
of the Java Trench.
626
00:29:05,944 --> 00:29:08,545
[Demetri] The trench lies
along a volatile seam
627
00:29:08,580 --> 00:29:09,713
in the earth's crust
628
00:29:09,748 --> 00:29:12,449
where two giant plates collide.
629
00:29:12,484 --> 00:29:15,285
Monumental forces
are grinding one plate down
630
00:29:15,320 --> 00:29:16,487
under the other,
631
00:29:16,521 --> 00:29:18,922
and the seamounts
are in the way.
632
00:29:20,792 --> 00:29:21,892
But that area there
does look like
633
00:29:21,926 --> 00:29:23,227
that's created by the seamount
634
00:29:23,261 --> 00:29:24,361
being subducted under the plate.
635
00:29:24,395 --> 00:29:25,562
You can see how that
is pushing there
636
00:29:25,597 --> 00:29:27,598
and energy is crushing
the seamount itself.
637
00:29:27,632 --> 00:29:28,932
The areas around the seamount,
638
00:29:28,967 --> 00:29:30,901
it's subducting
very, very slowly
639
00:29:30,935 --> 00:29:32,669
and it's stopped
because the seamount
640
00:29:32,704 --> 00:29:34,138
has actually physically stopped
641
00:29:34,172 --> 00:29:35,339
the subduction process.
642
00:29:35,373 --> 00:29:37,608
[Victor] A massive
underwater volcano
643
00:29:37,642 --> 00:29:39,476
- became a doorstop.
- [Alan] Yeah.
644
00:29:39,511 --> 00:29:41,812
They can cause a sticking point
645
00:29:41,846 --> 00:29:45,616
and then ultimately
there may be major earthquake
646
00:29:45,650 --> 00:29:47,951
or slip related
to that sticking point
647
00:29:47,986 --> 00:29:50,721
and the pressure
that is built up over time
648
00:29:50,755 --> 00:29:53,257
suddenly being released.
649
00:29:53,291 --> 00:29:54,525
[Demetri] A violent earthquake
650
00:29:54,559 --> 00:29:56,393
caused by one of these seamounts
651
00:29:56,427 --> 00:29:59,296
could in turn trigger
a devastating tsunami,
652
00:29:59,330 --> 00:30:01,231
affecting the millions of people
653
00:30:01,266 --> 00:30:04,168
who live along
the ocean's coastline.
654
00:30:04,202 --> 00:30:06,537
If Victor can reach
the bottom of the trench,
655
00:30:06,571 --> 00:30:08,772
he could gather
further crucial data
656
00:30:08,807 --> 00:30:11,809
to help predict earthquakes
and tsunamis of the future.
657
00:30:13,111 --> 00:30:15,312
The topography of this area
of the java trench
658
00:30:15,346 --> 00:30:17,881
has surprised us a bit,
because we're seeing
659
00:30:17,916 --> 00:30:19,716
what I would call
sharp features,
660
00:30:19,751 --> 00:30:21,552
things that seem
to come out of nowhere,
661
00:30:21,586 --> 00:30:23,353
with some pretty steep drops
662
00:30:23,388 --> 00:30:25,422
or some pretty strong rises,
663
00:30:25,456 --> 00:30:29,626
so it seems to be a pretty
active area seismologically.
664
00:30:29,661 --> 00:30:31,061
[Demetri]
But after working overnight
665
00:30:31,095 --> 00:30:33,297
to solve
the weight release issue,
666
00:30:33,331 --> 00:30:35,199
the engineering team
have been hit
667
00:30:35,233 --> 00:30:37,835
by another
mission-critical fault.
668
00:30:37,869 --> 00:30:39,937
[Kelvin] There was a little
pump that wasn't running
669
00:30:39,971 --> 00:30:42,706
and that's the, uh, for going
670
00:30:42,740 --> 00:30:44,208
for when you come back
to the surface
671
00:30:44,242 --> 00:30:45,709
pumping that water out,
672
00:30:45,743 --> 00:30:47,010
give you some buoyancy
673
00:30:47,045 --> 00:30:47,911
and for when you leave,
674
00:30:47,946 --> 00:30:50,480
it will helps you go down.
675
00:30:50,515 --> 00:30:53,150
[Frank] Constantly trying
to keep a running tab
676
00:30:53,184 --> 00:30:55,786
of everything so that
nothing gets missed.
677
00:30:55,854 --> 00:30:56,987
Cause I'm very tired.
678
00:30:57,021 --> 00:30:58,488
We're all very tired.
679
00:30:58,523 --> 00:31:00,924
[Kelvin] Come up, just wait,
just wait. Come up.
680
00:31:00,959 --> 00:31:02,926
[Demetri]
Can they fix the new problem
681
00:31:02,961 --> 00:31:05,562
before the cyclone
ends the expedition?
682
00:31:05,597 --> 00:31:08,465
[Frank] We got a red light now
we didn't have earlier.
683
00:31:11,469 --> 00:31:13,003
We get this done we can [bleep]
684
00:31:13,037 --> 00:31:14,972
get out of this [bleep]
forsaken place!
685
00:31:23,281 --> 00:31:25,649
[Demetri] The engineering team
are under pressure
686
00:31:25,683 --> 00:31:28,185
to turn the sub around
for a second attempt
687
00:31:28,219 --> 00:31:30,888
on the deepest point
of the Indian Ocean.
688
00:31:30,922 --> 00:31:32,723
[Kelvin] Yeah. It's fixed.
689
00:31:32,757 --> 00:31:34,124
Yup, problem solved.
690
00:31:34,158 --> 00:31:37,094
[Demetri] At last
the sub gets the "all clear".
691
00:31:37,128 --> 00:31:39,696
The biggest trick was trying
to figure out what went wrong,
692
00:31:39,731 --> 00:31:41,632
but we worked it out,
693
00:31:41,666 --> 00:31:42,900
and we are throwing
her back together.
694
00:31:42,934 --> 00:31:44,034
Good timing.
695
00:31:44,068 --> 00:31:46,236
[Kelvin] Roll her in.
696
00:31:46,271 --> 00:31:49,439
[Frank] Brand spanking new.
697
00:31:49,474 --> 00:31:50,874
Yeah.
698
00:31:50,909 --> 00:31:53,710
[Demetri] The team release
a first underwater probe
699
00:31:53,745 --> 00:31:57,047
codenamed "Skaff" to drop
to the deepest point
700
00:31:57,081 --> 00:31:58,448
of a narrow sinkhole,
701
00:31:58,483 --> 00:32:01,985
and act as Victor's target.
702
00:32:02,020 --> 00:32:05,555
[Alan D.] Okay, it's good to go.
703
00:32:05,590 --> 00:32:08,392
[Demetri] They also drop
a second probe a mile away
704
00:32:08,426 --> 00:32:11,895
outside the sinkhole
to gather additional data.
705
00:32:19,437 --> 00:32:23,206
[Patrick] Okay, Victor.
Ready for you.
706
00:32:23,241 --> 00:32:24,441
[Tim] Shall see you
on the other side.
707
00:32:24,475 --> 00:32:25,742
[Victor] See you
on the other side, Tim.
708
00:32:25,777 --> 00:32:27,210
Thanks, man.
709
00:32:27,245 --> 00:32:28,278
[Patrick] All start, here we go.
710
00:32:28,313 --> 00:32:31,181
We are getting
the tow line off first.
711
00:32:31,215 --> 00:32:34,117
[radio voice] Excellent
detachment, gentlemen.
712
00:32:34,152 --> 00:32:37,554
Okay. Here we go!
713
00:32:37,588 --> 00:32:39,556
[Demetri] With the threat
of a tropical cyclone
714
00:32:39,590 --> 00:32:41,258
hanging over the expedition,
715
00:32:41,292 --> 00:32:43,060
this could be
Victor's best chance
716
00:32:43,094 --> 00:32:44,594
to complete his mission,
717
00:32:44,629 --> 00:32:46,997
and gather fresh evidence
from the ocean's
718
00:32:47,031 --> 00:32:48,865
deadly tsunami trigger zone.
719
00:32:52,337 --> 00:32:55,372
So we've got a nice
descent rate going.
720
00:32:55,406 --> 00:32:58,909
These are places
that since the dawn of time,
721
00:32:58,943 --> 00:33:01,078
no one's been there
722
00:33:01,112 --> 00:33:02,612
and I'm going to see
for the first time.
723
00:33:06,517 --> 00:33:08,585
[Demetri] It's now been
nearly three hours
724
00:33:08,619 --> 00:33:12,356
since Victor left the surface.
725
00:33:12,390 --> 00:33:14,791
If we've dropped him
in the right spot,
726
00:33:14,826 --> 00:33:16,526
you know,
he should be pretty close
727
00:33:16,561 --> 00:33:18,895
to right over the target site.
728
00:33:18,930 --> 00:33:20,897
All stations,
be advised coming up
729
00:33:20,932 --> 00:33:22,299
to the quarter hour comms check.
730
00:33:22,333 --> 00:33:24,735
We do expect Victor
is approaching the bottom.
731
00:33:28,106 --> 00:33:29,506
[Victor] I can see
the bottom on my display.
732
00:33:29,540 --> 00:33:33,410
20 meters to go.
733
00:33:33,444 --> 00:33:37,147
Seafloor is starting
to come into view.
734
00:33:37,181 --> 00:33:40,951
Coming very clearly
into view now.
735
00:33:40,985 --> 00:33:43,353
Brown and speckled.
It looks like a desert floor.
736
00:33:48,226 --> 00:33:49,459
Wow!
737
00:33:54,165 --> 00:33:56,733
Surface, surface, LF.
738
00:33:56,768 --> 00:34:00,103
At bottom. At bottom.
739
00:34:00,138 --> 00:34:01,738
Roger LF.
740
00:34:01,773 --> 00:34:04,775
Understand, on the bottom.
741
00:34:04,809 --> 00:34:06,410
That was a lot of hard work.
742
00:34:10,248 --> 00:34:12,682
[Demetri] Victor
may be on the sea floor,
743
00:34:12,717 --> 00:34:15,218
but to reach the deepest
point of the Indian Ocean,
744
00:34:15,253 --> 00:34:18,388
he must find "Skaff",
the underwater probe
745
00:34:18,423 --> 00:34:20,524
the team have dropped
as his target.
746
00:34:20,558 --> 00:34:24,361
[Victor]
Okay, Skaffy, where are you?
747
00:34:24,395 --> 00:34:26,263
[Demetri]
Even at this extreme depth,
748
00:34:26,297 --> 00:34:28,432
in the pitch dark
and crushing pressures,
749
00:34:28,466 --> 00:34:32,235
there is life at the bottom
of the Indian Ocean.
750
00:34:32,270 --> 00:34:34,371
Amid a network of animal tracks,
751
00:34:34,405 --> 00:34:36,840
a sea pig,
which can inflate its body
752
00:34:36,874 --> 00:34:39,176
with water to float
from the seafloor
753
00:34:39,210 --> 00:34:40,444
like a balloon.
754
00:34:43,881 --> 00:34:45,148
A purple sea cucumber,
munching its way
755
00:34:45,183 --> 00:34:47,584
through the sediment
in search of nutrients.
756
00:34:49,387 --> 00:34:51,288
And one of its swimming cousins,
757
00:34:51,322 --> 00:34:53,557
drifting through
the sub's lights.
758
00:34:57,428 --> 00:34:59,629
Victor can communicate
with the probe
759
00:34:59,664 --> 00:35:01,665
to find out how far away it is,
760
00:35:01,699 --> 00:35:05,435
but not its direction.
761
00:35:05,470 --> 00:35:06,570
[Victor]
Okay, when I went south,
762
00:35:06,604 --> 00:35:08,905
I got a little closer,
763
00:35:08,940 --> 00:35:11,007
west a little further.
764
00:35:11,042 --> 00:35:12,642
[Demetri] Without
the two other probes
765
00:35:12,677 --> 00:35:14,744
to help triangulate
his position,
766
00:35:14,779 --> 00:35:18,048
Victor's task
will be far from easy.
767
00:35:18,082 --> 00:35:20,250
There's a current down here.
768
00:35:20,284 --> 00:35:22,052
I'm being pushed about a meter.
769
00:35:26,057 --> 00:35:29,092
Okay, come on,
what is that all about?
770
00:35:29,127 --> 00:35:31,928
Come on, LF.
771
00:35:31,963 --> 00:35:34,030
It's like trying
to find the Aegina
772
00:35:34,065 --> 00:35:36,733
docking component
of the Gemini mission.
773
00:35:36,801 --> 00:35:40,303
I swear it feels just like that.
774
00:35:40,338 --> 00:35:43,607
Okay. Nothing on sonar.
775
00:35:43,641 --> 00:35:45,308
[bleep]
776
00:35:45,343 --> 00:35:47,777
It's gone further away.
777
00:35:47,812 --> 00:35:52,415
Surface, bearing
please to Skaff.
778
00:35:52,450 --> 00:35:54,451
[radio chatter]
779
00:35:56,888 --> 00:35:58,188
[Patrick] He just transmitted.
780
00:35:58,222 --> 00:36:01,658
He was saying something.
781
00:36:01,692 --> 00:36:03,693
[radio chatter]
782
00:36:06,664 --> 00:36:09,933
What the [bleep] is that sound?
783
00:36:09,967 --> 00:36:12,702
[Demetri] If Victor doesn't
locate the target probe,
784
00:36:12,737 --> 00:36:14,704
he will fail to complete
his record attempt
785
00:36:14,739 --> 00:36:18,308
to reach the deepest point
of the Indian Ocean.
786
00:36:18,342 --> 00:36:20,110
Where are you SKAFF?
787
00:36:20,144 --> 00:36:22,412
[Demetri] And after
a near three-hour descent,
788
00:36:22,446 --> 00:36:24,781
and over two hours
already spent searching,
789
00:36:24,815 --> 00:36:26,750
time is running out.
790
00:36:38,696 --> 00:36:41,498
[Demetri] Victor Vescovo
is over 23,000 feet
791
00:36:41,532 --> 00:36:43,700
underwater in a small sinkhole,
792
00:36:43,734 --> 00:36:45,135
searching for the deepest point
793
00:36:45,169 --> 00:36:47,938
of the entire Indian Ocean.
794
00:36:47,972 --> 00:36:50,674
To keep his global
deep-ocean mission on track,
795
00:36:50,708 --> 00:36:52,676
he must hunt for a target probe
796
00:36:52,710 --> 00:36:55,045
dropped in advance of his dive.
797
00:36:55,079 --> 00:36:57,214
But now he has lost
communication
798
00:36:57,248 --> 00:36:59,049
with the expedition ship above,
799
00:36:59,083 --> 00:37:01,251
there's no one
to guide him home.
800
00:37:01,285 --> 00:37:03,253
[Victor] Surface, surface,
801
00:37:03,287 --> 00:37:07,924
present depth 7345.
802
00:37:07,959 --> 00:37:10,961
[radio noise]
803
00:37:13,264 --> 00:37:15,899
[Patrick] Say again, say again.
804
00:37:15,933 --> 00:37:18,468
'Cause we may be
on this shelf here.
805
00:37:18,502 --> 00:37:20,270
[Demetri]
It seems the steep walls
806
00:37:20,304 --> 00:37:22,439
of the sinkhole
are blocking Victor's signal.
807
00:37:22,473 --> 00:37:24,040
[Patrick] I'd like
to relocate pressure drop
808
00:37:24,075 --> 00:37:27,711
to establish comms,
back over the Op area.
809
00:37:27,745 --> 00:37:29,546
Okay, cap'n, we want
to get the modem up
810
00:37:29,580 --> 00:37:31,047
and repositioned right away.
811
00:37:31,082 --> 00:37:32,616
[Stuart] Yeah. Bridge copy.
812
00:37:35,586 --> 00:37:38,655
[Frank] Modem's in the water.
813
00:37:38,689 --> 00:37:40,757
[Victor] Surface, LF,
814
00:37:40,791 --> 00:37:44,761
present depth 733 niner meters.
815
00:37:44,795 --> 00:37:47,197
[Rob] You can breathe out now.
816
00:37:47,231 --> 00:37:50,400
[Patrick] Roger LF,
we have you loud and clear.
817
00:37:53,938 --> 00:37:55,739
[Victor] Should be dead ahead.
818
00:38:04,282 --> 00:38:05,649
I see you buddy.
819
00:38:08,653 --> 00:38:10,320
Oh, this is awesome.
820
00:38:10,354 --> 00:38:12,022
Going to sit down
right next to you Skaff,
821
00:38:12,056 --> 00:38:13,323
how about that?
822
00:38:18,396 --> 00:38:20,997
Touchdown.
823
00:38:21,032 --> 00:38:23,333
Ha!
824
00:38:23,367 --> 00:38:25,568
Bottom of the Indian Ocean,
825
00:38:25,603 --> 00:38:26,603
bottom of the Java Trench,
826
00:38:26,637 --> 00:38:30,440
first time in history,
pretty cool.
827
00:38:30,474 --> 00:38:32,575
Surface LF,
828
00:38:32,610 --> 00:38:33,977
present depth,
829
00:38:34,011 --> 00:38:37,847
7342 meters.
830
00:38:37,882 --> 00:38:40,083
At Skaff.
831
00:38:40,117 --> 00:38:43,520
Repeat, at Skaff.
832
00:38:43,554 --> 00:38:45,855
[Patrick] Understand,
you've found a spot,
833
00:38:45,890 --> 00:38:48,625
deeper than before,
congratulations!
834
00:39:01,405 --> 00:39:04,507
[Demetri] The underwater probe
is teeming with life.
835
00:39:04,542 --> 00:39:07,610
Thousands of tiny crustaceans
called Amphipods
836
00:39:07,645 --> 00:39:09,379
are feasting on the bait.
837
00:39:12,483 --> 00:39:15,385
These are the supreme
scavengers of the seabed.
838
00:39:22,393 --> 00:39:24,994
And arriving
to join the feeding frenzy
839
00:39:25,029 --> 00:39:28,565
is an overblown cousin,
known as a "Supergiant".
840
00:39:29,867 --> 00:39:32,102
Its body has evolved
to be large enough
841
00:39:32,136 --> 00:39:34,337
to discourage
voracious predators.
842
00:39:39,377 --> 00:39:43,213
Then an unidentified
luminous jelly-like creature
843
00:39:43,247 --> 00:39:45,348
comes tantalizingly close.
844
00:39:48,953 --> 00:39:51,154
Casting an ominous shadow.
845
00:39:55,926 --> 00:39:57,494
But the second probe,
846
00:39:57,528 --> 00:39:59,529
positioned a mile
from the deep sinkhole
847
00:39:59,563 --> 00:40:01,531
and 2,000 feet higher up
848
00:40:01,565 --> 00:40:03,867
is filming
an even more mysterious
849
00:40:03,901 --> 00:40:05,535
creature of the deep
850
00:40:05,569 --> 00:40:09,372
one that has never been seen
by human eyes before.
851
00:40:14,578 --> 00:40:17,280
With a bulbous, gelatinous head,
852
00:40:17,314 --> 00:40:20,049
and trailing a long strand
with what looks like
853
00:40:20,084 --> 00:40:21,951
a weight on the end,
854
00:40:21,986 --> 00:40:24,487
this is an entirely
unknown species
855
00:40:24,522 --> 00:40:27,123
of a creature known
as a "Sea Squirt".
856
00:40:28,626 --> 00:40:30,960
Only further study
and sightings could reveal
857
00:40:30,995 --> 00:40:33,329
the secrets of its bizarre body.
858
00:40:38,002 --> 00:40:41,938
[Victor]
Request permission to ascend.
859
00:40:43,374 --> 00:40:46,109
[Demetri] Victor has now
completed the third dive
860
00:40:46,143 --> 00:40:48,978
of his epic five-deeps mission.
861
00:40:49,013 --> 00:40:51,681
Helping to unravel
the mysteries of tsunamis
862
00:40:51,715 --> 00:40:54,484
that have devastated
the Indian Ocean,
863
00:40:54,518 --> 00:40:56,953
and to achieve
new insights into life
864
00:40:56,987 --> 00:41:00,757
on the extreme edge
of our planet.
865
00:41:00,791 --> 00:41:02,725
[Stuart] We have a visual.
866
00:41:02,760 --> 00:41:04,994
Welcome back sir,
we have you loud and clear.
867
00:41:05,029 --> 00:41:06,196
[Victor] Thank you.
868
00:41:10,334 --> 00:41:11,568
[Tim] Welcome back.
869
00:41:17,508 --> 00:41:19,409
[Victor] Seeing those creatures,
870
00:41:19,443 --> 00:41:21,277
seeing the dumbo at that depth
871
00:41:21,312 --> 00:41:22,712
and seeing this creature.
872
00:41:22,746 --> 00:41:24,147
[Alan] I've never seen
anything like that.
873
00:41:24,181 --> 00:41:25,682
That's the weirdest thing
I have ever filmed.
874
00:41:25,716 --> 00:41:26,950
[Victor]
We're going to show people
875
00:41:26,984 --> 00:41:28,785
that there is a lot down here
876
00:41:28,819 --> 00:41:30,453
that we know nothing about.
65514
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