All language subtitles for 1 1 Expedition.Deep.Ocean.Series.1.3of5.Indian.Ocean.1080p

No one, and I mean no one, has ever been
near the bottom of this trench.

We don't know what's down there. I've
never seen anything like that.

The sea temperature is extremely warm.

One of the first symptoms of heat stroke
is people acting irrationally. Hey, I'm

going as fast as I can.

You can't make it.

Nothing on the sun.

Humankind has explored every continent
on Earth.

We've climbed its tallest mountain.

And even journeyed into space.

Thank you, Mr. President.

But there's a vast swath of our own
planet that has remained a mystery.

The deep ocean.

Stretching down over 35 ,000 feet into
crushing pressures.

it's been near impossible to reach.

Until now.

New engineering breakthroughs are
driving an audacious global mission to

the deepest points of all the five
oceans for the first time in history.

These pioneers will push technology to
the limit. To open

up this final frontier as never before.

Trying to, like, mentally put yourself
at the bottom is just mind -blowing.

Mapping hidden landscapes.

Discovering unknown life forms.

What the F is that?

And unlocking the secrets of how life in
the extreme deep ocean affects our

entire planet.

Millionaire explorer Victor Vescovo has
spent the last four years preparing and

planning to make exploration history.

I've been doing some somewhat risky
things all my life.

Coming up with a mission that's never
been done before, that's extremely

exciting, that's difficult, and seeing
it through to its conclusion.

Victor has set himself the goal of being
the first person to head to all five of

the Earth's oceans, find their deepest
points, and explore their hidden

So far, he has completed two of the
five.

Overcoming storms in the Atlantic to
find new species.

At bottom.

And braving freezing waters to triumph
in the Southern Ocean.

Great job.

All right, picture.

Their third deep dive is in the Indian
Ocean.

This is the youngest of the oceans.

It's also the warmest, with an average
surface temperature of 90 degrees

Fahrenheit.

Beneath the waves, the sea floor is one
of the most geologically volatile areas

in the world.

A landscape of unpredictable falls,
fractures, and earthquakes that over the

last few decades have generated five of
history's deadliest tsunamis.

The ocean's deepest point lies at the
epicenter of a tsunami trigger zone, the

Java Trench, where two giant flakes in
the Earth's crust collide.

A crucial part of Victor's mission will
be to search for evidence on the

seafloor of what is causing the tsunami.

The more data we have from the deep
oceans, the better our models could be

predict these things.

No one, and I mean no one, has ever been
near the bottom of this trench or even

explored it.

We don't know what's down there.

At over 23 ,000 feet deep, the pressure
will be immense.

Any ordinary sub would simply implode.

So Victor has commissioned a pioneering
new design.

Go ahead and jack it up.

Roger. Its secret strength lies at its
core.

The cockpit is a ball of three and a
half inch thick titanium.

If this wasn't a perfect sphere, it
could crumple like a tin can.

Inside, a rack of oxygen tanks provides
up to 96 hours of emergency life

support.

If someone needs to go down to the
bottom of the ocean, the submarine's it.

It's now the deepest diving submersible
in the world. In fact, it's actually the

deepest diving vehicle, period.

You know, I think the submersible is the
most significant vehicle since Apollo

11. This is a vehicle that will allow us
to explore the last frontier on Earth.

But if something serious goes wrong at
full ocean depth, there's no hope of

rescue. It's the only thing in the world
right now that can go below 7 ,000

meters. Not even a remotely piloted
vehicle can do that.

We're getting the tow line off first.

And the sub is still very much a
prototype.

There you go.

In the first two ocean dives, the sub
team faced a massive learning curve.

There's a reason why nobody's done this
before. It's not easy.

It's going to an extreme, extreme
environment. There is no rescue plan.

This has to come back. It has to work.

Sort of testing by breaking.

Black on the tag light.

Why are we doing it?

And there's always a lot of heartache in
that process because for every two

steps you take forward, you've got to
come back and relearn one of them.

What am I supposed to do?

It can take up to 30 or even 40 dives
with a brand new submersible,

especially one designed with these
extreme features.

to get it to where things are working
well.

Okay, you guys ready?

Roger, go ahead.

Even if the sub is fully operational,
the team face a major hazard of the

Ocean.

It's tropical cyclone season.

The sea temperature here at the moment
is about 30, 31 degrees Celsius, which

extremely warm, and warm water is the
fuel of cyclones.

The pressure is on to complete the
mission before a cyclone forces them to

shelter.

First, the team need to use their high
-resolution sonar scanner to map the

uncharted depths of the Java Trim and
pinpoint the precise location of the

deepest point of the Indian Ocean.

It's one of the most advanced sonars in
the world. It's actually kind of

military -grade, and it has the
capability to...

acoustically survey the bottom of the
ocean all the way to full ocean depth

map it.

The early scans are already revealing
crucial new evidence to help a key

of this expedition.

The search for the causes of the deadly
Indian Ocean tsunami.

In that northern wall, we found at least
14 slope failures.

Some of those are four or five
kilometers wide, where big, big chunks

essentially just...

come loose during earthquakes and just
slump to the seafloor and they can be

responsible for tsunamis.

Monster landslides like these displace
vast amounts of water that on the

turn into devastating tsunamis.

The scans have also revealed a near
vertical cliff that may be the site of

next catastrophic collapse.

What we need to do is actually go down
and get some eyes on that and try and

find out whether these areas are...

about the fall, or if we've got areas
that fell a long time ago and the whole

area is actually quite stable.

The team decide to add to their mission
a research dive down to this cliff.

The phonar has identified a key
geological feature which otherwise would

have been found, and you have the tool
to go and dive on it.

Now this is great.

This is what we're here for, to find
things like this.

It's a one -off opportunity to explore
the dark secrets of the Indian Ocean,

it will be the first time the sub has
had to navigate so close to a

hazardous rock face.

It's kind of hard to get a sense of
angle when you're down there because

field of view is only about 10 or 15
meters.

Victor decides to put at the sub's helm
the most experienced sub pilot on board

and the builder of the sub itself,
Patrick Lahey.

Okay, so you go down, and you'll try and
find the wall first.

You know, we should have a plan and
stick to that plan.

Just get a lovely, beautiful video of
that slope.

Chief Scientist Alan Jamison will join
Patrick to guide the search.

All right, see you guys.

Hat, shirt.

Okay, LF, summer's clear. You're clear
to dive.

Roger that, Kelvin. I got a green board.

Two and a half hours after leaving the
surface and over 22 ,000 feet down,

finally, their target comes into view.

Oh, there's the wall.

We're just going to take it easy here
now.

The cliff towers over 600 feet above
them.

Patrick will need to be extremely
careful.

A sudden rockfall could put the sub in
serious danger.

And down here, there's no other
submersible in the world that can come

rescue.

Wow, it's deep.

I have to give it a little bit vertical
up there, buddy.

Oh, there's a... Excuse me, look at
that.

Big boulders on my right there.

Oh, oh, oh, oh.

Really, my fault.

This is a massive other hand.

Scientists Alan and sub -builder Patrick
are diving into an active geological

fault line where no one has been before.

I'm backing away, man.

They are seizing a unique opportunity to
investigate the origins of deadly

Indian Ocean tsunamis triggered by
massive underwater landslides.

Could this precarious wall be the next
disaster waiting to happen?

Those are big chunks of, looks like
volcanic rock, right?

Yeah.

We see these black rocks and these are
rocks that were once molten and they've

cooled down and...

They're black because they've cooled
down really quickly, so they've been

erupted onto the sea floor.

I'll just creep up the wall here. It's
going to bring us in closer.

So look how precarious this rock is.

This is a great big tower, this.

As you can see from that, it's not going
to take much of a rumble for that to

collapse.

A landslide here, and the sub could be
buried under a cascade of rocks and

sediment.

Whoa, what the hell was that?

Could you send me a data update?

LF, could you repeat your last?

I'm backing up.

Look at the colours of the rock.

Stunning.

Something that I wasn't expecting are
these multicoloured areas of what look

be bacterial mats.

Bright white, oranges, there's even some
blues in there. Really spectacular

colours. These are bacteria living off
the fluid that is coming out of the

seafloor. It is an extraordinary form of
life, feeding on the seabed itself.

And it's the first time anyone has seen
it at such enormous depths in the Indian

Ocean. Yeah, it's starting to flatten
out.

The mission has given the expedition a
remarkable insight into one of the most

volatile geological hotspots in the
world.

Actually getting eyes on the seabed and
looking at some of these mass movements

and the block failures, we can start to
piece together with a bit more certainty

the different...

processes going on in the java trends
some of these are related to potential

tsunamis in the future or indeed in the
past it's on our job right we found the

wall surface lf present depth at the top
of the wall yes

excellent so happy for him

surface lf uh requesting permission to
leave bottom

Roger that.

Releasing surfing weight now. There we
go.

Despite a few scratches to the sub's
outer housing, the dive has been a huge

success.

But as well as studying the geology of
the trench, Chief scientist Alan

is also eager to explore, for the very
first time, what life forms have adapted

to live in its crushing depths.

The Indian Ocean is kind of renowned for
having never really been properly

studied, and that's the same for the
shallow water, never mind the very, very

deep water.

A set of underwater probes known as
landers, packed with technology, will

baited cameras to film life on the
seabed.

The target is in an area near the bottom
of the Java Trench.

But first, the probes must pass through
ever -deeper layers of the Indian Ocean,

where remarkable creatures find their
home.

From the sunlight zone, where sunfish
the size of pickup trucks bask on the

surface.

And dugong, distant relations of the
elephant, graze on sea grass.

To the Twilight Zone, where monstrous
six -gill sharks, unchanged from the

of the dinosaurs, lurk during the day,
surfacing to hunt by night.

And where leatherback turtles, the
deepest diving reptiles on the planet,

hunting for jellyfish.

Their flexible shells and collapsible
lungs make them perfectly adapted to

survive the crushing pressures.

Deeper still, into the midnight zone,
where vampire squid use their cape -like

foal, lined with tiny spines, to protect
themselves against attack by deep

-diving predatory fish.

And slender snipe eels use microscopic
hooked teeth on their beak -like jaws to

snare shrimp.

Finally, the scientific probes reach the
very deepest zone of the Indian Ocean.

The Hadal Zone.

Now their cameras are the very first in
history to film in this inhospitable

landscape. And they capture rare footage
of an elusive deep ocean hunter.

Nobody really knows anything about them.
Their common name is Assfish. Not a

great name. Not a great name.

If you look at it, it's got its double
nostril here.

So it's got massive nostrils. So it
doesn't care about the bait. What it

is where it can smell bait, there's
going to be an accumulation of

So it just turns up and just picks them
up.

Once the crowd of the shrimp -like
scavengers arrive, it's dinner time.

Then, from one of the darkest, most
remote parts of the planet, comes the

of creatures, a Dumbo octopus.

Remarkably, it's the deepest octopus
ever filmed, by almost 6 ,000 feet.

Its tentacles are joined together by a
web of skin to form an umbrella -like

body, and the huge ear -like fins that
give the Dumbo its name help to make it

an extremely agile swimmer.

It's waiting for the bait to lure its
favorite meal.

An unsuspecting deep -sea crustacean is
moving across the seabed.

In such a pitch -black home, the Dumbo's
eyes are virtually sightless.

Instead, it uses sensors in its
tentacles to pinpoint its prey.

Quite often what octopus do is they'll
sit on top of a crustacean and they'll

bore a hole through the back of its
shell and they'll inject it with saliva

it dissolves the...

The shrimp, for example, from the
inside, then it sucks out.

That's disgusting.

The probes have brought back remarkable
images from the deep.

And now the scanning team have dramatic
news for the expedition of Victor's

ultimate target.

This tiny sinkhole is the deepest point
in the Indian Ocean.

It will be the most challenging of the
deep yet attempted.

We're going to drop right into it,
almost like trying to drop a marble into

bucket 50 meters down.

My highest priority is getting you
safely back on board.

The scanning team have finished mapping
the previously uncharted reaches of the

Java Trench.

It is a critical moment in the mission,
because the trench might not hold the

deepest point in the Indian Ocean after
all.

The team now need to compare the data
with a rival candidate scanned on their

way, a fracture zone off the coast of
Australia called Diamantina.

This yellow dot right here is the
deepest point within this big basin of

Diamantina fracture zone at 7 ,019
meters.

If the Java Trench turns out to be
shallower, then the expedition is 1 ,000

miles off course.

We continue to learn new things.

I think Kathy and her team understated
what they've done, but we have solved

mystery that has always been around,
which is what is the deepest point in

Indian Ocean?

Until this week, no one could
definitively answer that question. In

was a big debate whether it was the
Diamantina or the Java Trench.

Well, it is the Java Trench. It's not
just the Java Trench. It's in a place no

one thought it was.

It's in the center of it, not the east
or the west.

But to reach this deepest point will be
a massive navigational challenge.

In the middle of the Java Trench is this
tiny sinkhole that we actually have

determined to be the deepest point in
the Indian Ocean.

And Victor is diving that.

We're going to drop right into it,
almost like trying to drop a marble into

bucket 50 meters down.

This one you could actually miss.

If the team get their calculations
wrong, Victor will be navigating a

dangerously rocky landscape with the
risk of a damaging collision.

Coming up, EC. To help Victor find his
way.

the team drop one of their robotic
probes directly above the deepest point.

It has an onboard modem to communicate
with the ship and the sub.

Victor will then have to find the probe
to reach the deepest point.

Normally, two other probes are also
launched to other sites on the seabed to

help calculate Victor's exact position.

On this dive, the team are gambling that
Victor can navigate alone.

We don't have a vast open plane down
there.

We thought we would put the lander
directly over top of the target, but you

directly on the target. Without the
three landers to triangulate, we won't

able to guide him to the actual
position, so it is a little bit riskier.

If he sees the lander, then he's at the
deepest point.

With the probe now signaling from the
seabed, the team need to launch Victor

quickly as they can.

The tropical cyclone seen brewing on the
horizon is now gathering strength and

threatening to end the multi -million
dollar expedition before Victor has had

chance to complete his dive.

So it's a large storm system.

It's about 300 miles across.

It's generating this huge vortex with
cyclone running at about 65 knots, maybe

75 knots, and waves of 6 to 8 meters.

And we are just up in this area.

There's an element of chance in all of
this because it depends on where the

cyclone is drawing its fuel from as to
where it'll head. We can't dally too

here. It could make life a little bit
difficult for us. Here in the tropics,

can usually find somewhere to hide, but
of course they'll rob us of any chance

to do a dive.

The nightmare scenario for me is the
weather picks up very quickly, very

and then we have trouble recovering it.

If Victor is going to become the first
person to touch down at the deepest

in the Indian Ocean, the team need to
get him launched as quickly as possible.

Okay,

Victor, ready for you.

Guys, grab that. Grab that.

Report is on and good. I have a green
board. I am due to launch.

Roger.

Swimmer is clear. You are clear to dive.

Swimmer is clear. Enabling thrusters.

And he's gone.

You've died.

All right, we are descending.

Seems a little slower than it did in
Southern Ocean, 15 meters per minute.

That's pretty slow.

It could take a while to get down.

Present depth, 849 meters.

Well, that's awfully slow, isn't it?

It's 0 .7.

So 0 .7 meters a second is 42 meters.

A minute.

He went 400 meters in 15 minutes. That
does seem slow.

Oh, wow.

Roger, 1077.

He's going real slow.

Something's not right.

With a mission -critical cyclone
building over the horizon, Victor's

be the first person in history to visit
the deepest point of the Indian Ocean is

in serious danger of unraveling.

He's going real slow.

Something's wrong.

The sub is dragged down through the
water by a set of steel weights held in

place by two electromagnets.

The weights need to be heavy enough to
override the specialist buoyant foam

block that will ultimately pull the sub
back to the surface.

I can only assume that something's
dropped off.

It's the only thing it can be. I suspect
that one of the magnets has failed.

Which was the one that had a little bit
of corrosion on it? It was the aft one.

I cleaned that all up this morning.

So, you know, we're just burning
daylight.

Patrick,

as Mission Control Chief, now has a
difficult call to make.

To risk a lengthy dive, or pull the
plug, get the sub back on the surface

hope there's time for a second attempt
before the cyclone hits.

Roger that.

Victor, I'm recommending an abort.

I do not believe you can reach the
bottom.

I understand you suggest abort.

Pretty disappointed.

You're all good.

Okay, do be advised that he's been given
clearance to surface. ETA is just a

couple of minutes.

Great, helping.

Roger that.

Let's roll.

Hey. Hello. Hey, how you doing?

Good feedback. Yeah, good feedback.

The pressure is on to get the sub fixed
quick and make a second dive.

I got some little fetter spikes.

It's a complex system.

There are many, many elements, whether
it's the ballast system or whether it's

the communication system.

Okay, you guys ready?

I don't know what's going on here.

There's so many things that have to work
just right for this ballet to come off

without a hitch.

But in boiling temperatures pushing 84
degrees Fahrenheit, the sub -engineering

team are nearing breaking point.

Okay, I'm going as fast as I can.

There is a lot of stress on people to
get everything right.

Oh, Frank, turn it off.

Had enough, man. Ready to go home.

Hang on a second.

You got a hose trapped in there.

I think people are learning, you know,
kind of what they have to do and how

attention to detail they have to have to
make it all work right.

While the engineering crew work
overnight to fix the sub, the scanning

found stunning new data in the trench,
revealing a second explanation for the

devastating Indian Ocean tsunamis.

So that's from there, right? Yeah, I
think it's a faulted seamount.

A series of massive hills on the trench
floor.

Extinct volcanoes known as seamounts
that act like ticking time bombs.

We've identified a number of seamounts
that are in the process of being

in the trench axis of the Java Trench.
The trench lies along a volatile seam in

the Earth's crust where two giant plates
collide.

Monumental forces are grinding one plate
down under the other, and the seamounts

are in the way.

But that area there doesn't look like
that created by the seamount being

subducted under the plate. You can see
how it's pushing down and the energy is

crushing the seamount itself.

The areas around the seamount, it's
subducting very, very slowly, and it's

stopped because the seamount has
actually physically stopped its

process. A massive underwater volcano
became a doorstop.

Yeah. It can.

causes sticking points, and then
ultimately there may be a major

slip related to that sticking point and
the pressure that is built up over time

suddenly being released.

A violent earthquake caused by one of
these seamounts could in turn trigger a

devastating tsunami, affecting the
millions of people who live along the

coastline. If Victor can reach the
bottom of the trench... he could gather

further crucial data to help predict
earthquakes and tsunamis of the future.

The topography of this area of the Java
Trench has surprised us a bit because

we're seeing what I would call sharp
features, things that seem to come out

nowhere with some pretty steep drops or
some pretty strong rises.

So it seems to be a pretty active area
seismologically.

But after working overnight to solve the
weight release issue...

The engineering team have been hit by
another mission -critical fault.

There was a little pump that wasn't
running.

And that's for when you come back to the
surface, pumping that water out, give

you some buoyancy.

And when you leave, it'll help you go
down.

Constantly trying to keep a running tab
of everything so that nothing goes

missing. Because I'm very tired. We're
all very tired.

Oh, it just went. It just went. Come up.
Come up. Can they fix the new problem

before the cyclone ends the expedition?

All right, Tom, you've got a red light
now that we didn't have earlier.

If we get this done, we can get out of
this forsaken place.

The engineering team are under pressure
to turn the sub around for a second

attempt on the deepest point of the
Indian Ocean.

So, yeah, it's fixed.

Problem solved.

At last, the sub gets the all clear.

Biggest trick was trying to figure out
what went wrong, but we worked it out.

We're throwing it back together.

Good timing.

Roller in.

Yeah, it's banking there.

Yeah.

The team release a first underwater
probe, codenamed SCAP, to drop to the

deepest point of a narrow sinkhole and
act as Victor's target.

They also drop a second probe a mile
away,

outside the sinkhole, to gather
additional data.

Okay, Victor, ready for you.

You shouldn't sit on the other side.

Sit on the other side, Tim. Thanks, man.

I'll stop. Here we go. We're getting the
tow line off first.

Excellent detachment, gentlemen.

Okay, here we go.

With the thread of a tropical cyclone
hanging over the expedition, this could

Victor's best chance to complete his
mission and gather fresh evidence from

ocean's deadly tsunami trigger zone.

I've got a nice descent rate going.

These are places that since the dawn of
time, no one's been there.

I'm getting to see it for the first
time.

It's now been nearly three hours since
Victor left the surface.

If we've dropped him in the right spot,
you know, he should be pretty close to

right over the...

the target site. All stations be
advised, coming up to the quarter hour

check, we do expect Victor is
approaching the bottom.

I see the bottom of the display, 20
meters to go.

Seafloor is starting to come into view.

Coming very clearly into view now.

Brown and spackled, looks like a desert
floor.

Surface, surface.

LF, at bottom.

At bottom.

Roger, LF. Understand.

On the bottom.

That was a lot of hard work.

Victor may be on the sea floor, but to
reach the deepest point of the Indian

Ocean, he must find Skaff, the
underwater probe the team have dropped

target. Okay, Skaffy, where are you?

Even at this extreme depth, in the pitch
dark and crushing pressures, there is

life at the bottom of the Indian Ocean.

Amid a network of animal tracks, a sea
pig, which can inflate its body with

water to float from the sea floor like a
balloon.

A purple sea cucumber, munching its way
through the sediment in search of

nutrients.

And one of its swimming cousins,
drifting through the sub's life.

Victor can communicate with the probe to
find out how far away it is, but not

its direction.

Okay, when I went south, it got a little
closer.

West a little further.

Without the two other probes to help
triangulate his position, Victor's task

will be far from easy.

There's a current down here.

I'm being pushed about a meter.

Come on.

all that. Come on.

It's like trying to find the Athena
docking component of the Gemini mission.

swear it feels just like that.

Okay. Nothing on the sun.

Further on.

Surface. Bearing.

Gleam. Two.

Scaff.

He just transmitted.

He was saying something.

Did that sound?

If Victor doesn't locate the target
probe, he will fail to complete his

attempt to reach the deepest point of
the Indian Ocean.

Where are you, Steph?

And after a near three -hour descent and
over two hours already spent searching,

time is running out.

Victor Vescovo is over 23 ,000 feet
underwater in a sinkhole searching for

deepest point of the entire Indian
Ocean.

To keep his global deep ocean mission on
track, he must hunt for a target probe

dropped in advance of his dive.

But now he has lost communication with
the expedition ship above. There's no

to guide him home.

Surface, surface.

Present depth.

Seven, three, four.

Five.

Say again.

Say again.

Because we may be on the shelf here.

It seems the steep walls of the sinkhole
are blocking Victor's signal. I'd like

to relocate pressure drops to establish
comms back over the op area.

Okay, Captain, we want to get the modem
up and reposition right away. Yeah,

great copy.

Modem's in the water.

Surface, LF. 7,

3, 3, 9. You can breathe out now.

Roger, LF. We have you loud and clear.

I see you, buddy.

This is awesome.

I'm going to sit down right next to you,
Scaf. How about that?

Touchdown.

Bottom of the Indian Ocean.

Bottom of the Java Trench. First time in
history.

Pretty cool.

Surface. LF.

Present depth.

7, 3, 4, 2 meters.

At. Scaff.

Repeat. At. Scaff.

Understand. You found a spot deeper than
before.

Congratulations.

The

underwater

probe is teeming with life.

Thousands of tiny crustaceans called
amphipods are feasting on the bait.

These are the supreme scavengers of the
seabed.

And arriving to join the feeding frenzy
is an overblown cousin known as a

supergiant.

Its body has evolved to be large enough
to discourage voracious predators.

Then an unidentified luminous jelly
-like creature comes tantalizingly

casting an ominous shadow.

But the second probe, positioned a mile
from the deep sinkhole and 2 ,000 feet

higher up, is filming an even more
mysterious creature of the deep.

one that had never been seen by human
eyes before.

With a bulbous, gelatinous head, and
trailing a long strand with what looks

a weight on the end, this is an entirely
unknown species of creature known as a

sea squirt.

Only further study and sightings could
reveal the secrets of its bizarre body.

Request permission to ascend.

Victor has now completed the third dive
of his epic five deep mission, helping

to unravel the mysteries of tsunamis
that have devastated the Indian Ocean

to achieve new insights into life on the
extreme edge of our planet.

We have a visual.

Welcome back, sir. We have you loud and
clear. Thank you.

Welcome back.

Three down.

Seeing those creatures, seeing the Dumbo
at that depth, and seeing this

creature. I've never seen anything like
that. That's the weirdest thing I've

ever felt.

We're going to show people that there is
a lot down here that we know nothing

about.