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[James Cameron] The Ocean...
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the last frontier on earth.
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{\an8}So much is unexplored
and unexplained.
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{\an8}To change that...
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a kickass team of insanely
talented specialists is
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setting out to push the
frontiers of what we know
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about our oceans.
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[Zoleka Filander] Oh my gosh.
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[James Cameron] Zoleka Filander,
deep sea scientist.
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[Zoleka Filander] Being a
deep-sea researcher means
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having front row tickets to
the best movie that everybody
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wants to watch.
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[James Cameron]
Melissa Márquez...
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[Melissa Márquez]
Straight ahead, 12:00.
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[James Cameron]
Shark biologist.
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[Melissa Márquez] We just saw
what no one has seen before.
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[James Cameron]
Eric Stackpole...
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[Eric Stackpole] Scan now!
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[James Cameron] Ocean
tech innovator.
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[Eric Stackpole] I love
building tools that allow us
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to see things in ways
we've never seen before.
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[gasps]
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[James Cameron] And Aldo Kane...
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[Aldo Kane] This is insane.
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[James Cameron] Former
Royal Marine; special ops.
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[Aldo Kane] It doesn't get
any more cutting-edge
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exploration than this.
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[James Cameron]
Their secret weapon...
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...the OceanXplorer.
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The most technologically
advanced research vessel
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ever built.
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There's never been a more
urgent need to understand
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our ocean and the animals
that call it home...
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Because their lives
and ours depend on it.
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This time, the team's
following one of the ocean's
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most unique predators.
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[Matt Smukall]
Hammer, hammer, hammer...
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[James Cameron] To
discover the superpowers.
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[Eric Stackpole] Look
at the size of him!
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[James Cameron] Of
the great Hammerhead.
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{\an8}[theme music plays].
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[James Cameron] The team is
powering through the
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Atlantic Ocean off the eastern
seaboard of the USA.
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[Pilot] Green light
green deck we're lifting.
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[James Cameron] Firing up
the OceanXplorer's armory of
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cutting-edge gear.
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[helicopter whirring]
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They're on a mission to search
out one of the strangest
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sharks in our oceans and
one of the most recognizable
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animals on the planet.
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[helicopter whirring]
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[Eric Stackpole] That's
what we're looking for.
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[James Cameron] The
great hammerhead.
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These sharks haven't
changed for millions of years.
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They are one of evolution's
most eccentric creations.
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But why would nature select
for a head shaped like
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a stealth bomber?
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Science suggests:
Improved agility and
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enhanced electro
sensor capabilities
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make this shark one of the
most specialized in the ocean.
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[♪ intimidating music]
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Hammerheads are found off the
coast of Virginia to the North
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and Louisiana to the West.
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But highly sensitive
to temperature,
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every winter they migrate to
the warmer waters of Florida.
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We think the sharks are
navigating this journey,
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by following the
earth's magnetic field.
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This field generated by
our planet's molten core,
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creates the magnetic
north and south poles.
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It's believed that hammerheads
can tune into this and use it
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like we'd use a compass.
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But as a mariner, I know even
one degree out and you're
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soon miles off course.
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So how do great hammerheads
navigate so accurately
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across this vast ocean?
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With the hope of
finding an answer...
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The team is in Florida.
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Their plan, to attach a
camera tag to a hammerhead.
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[Aldo Kane] Welcome aboard.
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{\an8}[James Cameron]
They're joined by
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{\an8}marine ecologist
Erin Spencer.
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[Aldo Kane] Here he is,
welcome aboard.
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Let's go.
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{\an8}[James Cameron] And shark
biologist Matt Smukall.
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{\an8}[Erin Spencer] Everyone
ready to tag some sharks?
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[engine rumbling]
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[Matt Smukall] Hammer!
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[Erin Spencer] Hammer!
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[James Cameron] The only way
to catch a hammerhead is with
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a baited line.
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It might look stressful, but
these sharks are tough,
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and their wellbeing is the
team's top priority.
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[Matt Smukall] Get out of the
way guys, get out of the way.
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Alright. Coming up.
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Neutral, neutral, neutral.
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Go for dorsal.
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[Aldo Kane] I have the dorsal.
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[James Cameron] The team works
fast to take vital measurements.
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[Eric Stackpole] 80 to caudal.
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[Matt Smukall] 180 to caudal.
180 caudal.
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186 for fork length.
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[Zoleka Filander] 186.
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[Matt Smukall] Check the
sex Erin, remember sex.
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[James Cameron] They
attach a tracking tag.
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[Erin Spencer]
Alright, it secure?
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[James Cameron] And release
the shark in under 5 minutes.
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[Aldo Kane] It's a physical
task holding onto that
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{\an8}main dorsal fin.
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You know it's amazing but it's,
like it's a live animal and
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it's, you know you, you are
fully tuned, you're focused.
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[Matt Smukall] We have
30 seconds to release.
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You guys on tail
count it down.
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[Eric Stackpole] 3,2,1...
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Tail's loose.
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[Erin Spencer]
Looking good, swimming off.
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[Matt Smukall]
Alright, Nice job guys.
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Nice job.
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[Aldo Kane] How many hammers
have you worked up like this?
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[Erin Spencer] So we've worked
up quite a number of hammers
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but it's the first time we've
been able to put out a
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video tag with our speed sensor.
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And so hopefully we're gonna
get some good footage to also
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match up maybe with
some of that speed data.
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[James Cameron] The tag
is designed to fall off
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within 24 hours.
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[Matt Smukall] What's that
just, at like 11:00?
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[Erin Spencer]
See that floating?
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[Matt Smukall]
Is that the tag?
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[Aldo Kane] Look how
small that is in the water.
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[Erin Spencer] Whoa.
We have a tag!
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So you're gonna see what the
shark sees, are you ready?
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You can see him turning
to look left and right.
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[Aldo Kane] That's amazing
getting that perspective of
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the head moving.
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[Erin Spencer] We're
moving up towards the surface.
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And he's right at the surface,
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you can see the
water patterns at the surface.
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Now we're back towards the
bottom down to about 80 meters.
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[Matt Smukall] It looks like
that's a choice to either be
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up at the surface or down, it's
not just like a wandering.
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[Zoleka Filander] You're
actually right, cos like if
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you look closely, we can
actually see this up and down
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movement of the shark, and it,
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it resembles a yo-yo pattern.
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And it looks like it
happened 20 or 30 times.
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And I'm just wondering,
why would the shark be using
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so much energy intentionally
moving up and down?
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Do you think it has something
to do with its magnetic sense?
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[James Cameron] For a shark,
the earth's magnetic field is
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clearest at the surface.
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But the seafloor also has
local magnetic fields created
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by geological formations.
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It's believed that hammerheads
yoyo up and down to create a
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virtual magnetic map.
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This map allows them to
plot a more accurate course.
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So that they can eventually
find their destination
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hundreds of miles away.
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Some hammerheads are content
wintering in Florida,
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but others keep going.
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Crossing the Gulf stream
into the Bahamas.
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And eventually, even pinpointing
the tiny island group of Bimini.
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Following in the wake of
the great hammerheads,
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The OceanXplorer sets sail.
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[James Cameron] Matt's been
studying hammerheads in Bimini
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for years, and knows
the best place
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for Eric to meet the locals.
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[Eric Stackpole]
Ok, let's do it.
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[Matt Smukall] Ready.
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[SCUBA breathing]
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Alright.
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[James Cameron] This feeding
station attracts more than
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just Hammerheads.
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[Matt Smukall] Bull shark!
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So those are the sharks that
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you know have a
pretty bad reputation.
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[Eric Stackpole] Looks like
a shark that means business.
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[Matt Smukall] Eric.
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Hammer hammer, hammer.
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Look at the size of him.
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He must be at
least 12 feet long.
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I just need to keep telling
myself they don't eat people,
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they eat stingrays.
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[Eric Stackpole] So do
you recognize this shark?
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[Matt Smukall]
Yeah this is Atlas.
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He's one of the
regulars around Bimini.
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And he's been coming
back at least 6 or 7 years.
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[Eric Stackpole]
So he's an old friend.
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Maybe he
recognizes you as well.
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[bubbles]
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{\an8}Seeing Atlas return to this
island year after year
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{\an8}is incredible.
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{\an8}I mean it's a tiny little
speck in a big ocean,
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{\an8}but you don't get that ability
without having some
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crazy navigation skills.
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But I guess that's
evolution in action.
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[James Cameron] Thanks to
Matt's research, we know
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hammerheads like Atlas
keep coming back to Bimini.
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But it's only 7 miles long.
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Even with geomagnetic
navigation, finding this place
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is a longshot.
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So how do these
sharks get here?
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Could they be using other
senses to help guide them in?
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00:13:07,286 --> 00:13:09,622
Zoleka wants to map
the seafloor using the
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OceanXplorer's sonar.
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00:13:12,708 --> 00:13:15,836
In the hope it
uncovers an answer.
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[computer beeps]
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[clicking]
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[Zoleka Filander] The sea
floor in this area has never
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00:13:30,684 --> 00:13:33,395
{\an8}been mapped to this resolution
before, and so I'm really
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{\an8}hoping we pick up
on some anomalies.
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{\an8}Different features that can
give insights as to how these
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hammerhead sharks are
coming here to Bimini.
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00:13:44,657 --> 00:13:46,951
[James Cameron] The ship scans
for 12 hours straight,
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00:13:47,326 --> 00:13:50,079
mapping this area for
the very first time,
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00:13:52,122 --> 00:13:53,707
and generating detailed images
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00:13:53,791 --> 00:13:56,877
of what lies
beneath the surface.
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00:14:00,506 --> 00:14:02,341
[Eric Stackpole] Wait so this
has got to be exaggerated relief
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00:14:02,466 --> 00:14:04,510
right, I mean these are
really sharp features
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00:14:04,593 --> 00:14:05,636
that we're seeing here.
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00:14:05,719 --> 00:14:06,846
[Zoleka Filander]
It's not exaggerated.
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00:14:06,929 --> 00:14:08,472
[Eric Stackpole] This is
actually what it looks like?
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00:14:08,556 --> 00:14:09,682
There's huge, tall pillars
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00:14:09,807 --> 00:14:11,100
sticking out of the
bottom of the ocean?
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00:14:11,308 --> 00:14:13,269
[Zoleka Filander] Yeah. Yeah.
This is very exciting.
225
00:14:13,769 --> 00:14:16,397
[James Cameron] The sonar
reveals a labyrinth-like terrain
226
00:14:16,480 --> 00:14:18,691
hidden on the ocean floor.
227
00:14:18,774 --> 00:14:20,484
[Eric Stackpole] These are
meter marks, it's 100 meters.
228
00:14:20,568 --> 00:14:22,236
So that's like a
300-foot tower.
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00:14:22,319 --> 00:14:24,321
I mean, I'm just trying to
picture that standing up
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00:14:24,405 --> 00:14:26,532
from the bottom of the sea.
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00:14:26,740 --> 00:14:28,450
[James Cameron] These towers
are the height of the
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00:14:28,576 --> 00:14:29,869
Statue of Liberty.
233
00:14:33,289 --> 00:14:34,832
[Aldo Kane] This is
off the west coast then?
234
00:14:34,957 --> 00:14:36,625
[Matt Smukall] Right on the,
right on the drop off to
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00:14:36,709 --> 00:14:37,793
the gulf stream.
236
00:14:38,419 --> 00:14:40,671
[Erin Spencer] Is this what
you thought, is this a surprise?
237
00:14:40,796 --> 00:14:42,715
[Matt Smukall] We
didn't know this was there.
238
00:14:42,798 --> 00:14:44,466
There's a lot going on there,
that's really exciting.
239
00:14:47,177 --> 00:14:49,346
[Zoleka Filander] It would be
great to do a sub dive and
240
00:14:49,555 --> 00:14:52,850
to get like some visuals
on what's there, you know.
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00:14:53,225 --> 00:14:56,729
We always go out to find the
known unknowns, but we stumble
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00:14:56,854 --> 00:14:59,523
on the absolutely unknowns,
243
00:14:59,607 --> 00:15:02,318
like something we've
never seen before.
244
00:15:16,498 --> 00:15:18,250
[James Cameron] To discover if
these towering outcrops could
245
00:15:18,334 --> 00:15:21,754
be influencing the great
hammerhead's navigation,
246
00:15:21,837 --> 00:15:26,216
Zoleka and Matt take a
dive into the deep.
247
00:15:29,094 --> 00:15:31,764
[Zoleka Filander] This is
real, real exploration.
248
00:15:33,432 --> 00:15:36,435
No idea what we are
getting ourselves into.
249
00:15:37,770 --> 00:15:40,064
[SO] Bridge, SO
that's Neptune off deck.
250
00:15:40,648 --> 00:15:42,483
[Bridge] Copy that!
251
00:15:49,907 --> 00:15:53,118
[splashing]
252
00:15:58,248 --> 00:15:59,875
[Pilot] Ah Roger SO.
253
00:16:00,000 --> 00:16:01,669
SO, this is Neptune,
venting now.
254
00:16:02,920 --> 00:16:05,130
[SO] Venting now.
255
00:16:16,976 --> 00:16:18,644
[James Cameron] The sub team
will be accompanied by the
256
00:16:18,769 --> 00:16:21,480
remotely operated vehicle.
257
00:16:23,315 --> 00:16:25,943
Controlled from the surface
it sends up live pictures
258
00:16:26,026 --> 00:16:28,529
from the seafloor.
259
00:16:32,658 --> 00:16:34,118
[Pilot] Control, control.
260
00:16:34,201 --> 00:16:36,996
This is Neptune,
passing 500 meters.
261
00:16:37,329 --> 00:16:38,580
Descending.
262
00:16:38,664 --> 00:16:40,541
Depth under keel 21 meters.
263
00:16:40,833 --> 00:16:42,209
Over.
264
00:16:42,376 --> 00:16:44,253
[SO] Roger.
265
00:16:44,545 --> 00:16:46,922
[Aldo Kane] Where these
pinnacles are is, is right in
266
00:16:47,006 --> 00:16:50,384
the gulf stream and that gulf
stream is, is cranking north
267
00:16:50,467 --> 00:16:53,345
the whole time
there's no rest there.
268
00:16:54,847 --> 00:16:57,391
[Pilot] That's a
strong current.
269
00:17:08,569 --> 00:17:10,529
[James Cameron] The Gulf stream
is the fastest ocean current
270
00:17:10,612 --> 00:17:14,867
in the world, running
up to five miles per hour.
271
00:17:17,161 --> 00:17:18,829
And 1600 feet down
272
00:17:18,912 --> 00:17:21,665
the deep dive team
is feeling its force.
273
00:17:21,749 --> 00:17:22,875
[Pilot] Zoleka can you see?
274
00:17:22,958 --> 00:17:24,293
[Zoleka Filander]
I can't see much.
275
00:17:26,462 --> 00:17:28,589
[James Cameron] The strong
current is picking up sediment
276
00:17:28,672 --> 00:17:31,717
and visibility is
reduced to near zero.
277
00:17:35,095 --> 00:17:39,558
Conditions us sub pilots
refer to as "off-nominal".
278
00:17:43,812 --> 00:17:45,064
Out of the gloom.
279
00:17:45,147 --> 00:17:47,691
[Pilot] Ah man,
that's massive.
280
00:17:47,775 --> 00:17:50,986
[James Cameron] A
towering pinnacle.
281
00:17:54,531 --> 00:17:57,743
[Zoleka Filander] Oh
this is so beautiful.
282
00:18:00,788 --> 00:18:02,039
[Pilot] Control,
this is Neptune.
283
00:18:02,122 --> 00:18:05,209
Intention is start
working up wall, over.
284
00:18:06,001 --> 00:18:08,337
[SO] Roger, walking up wall.
285
00:18:09,797 --> 00:18:11,590
[Eric Stackpole] Oh my gosh.
286
00:18:13,675 --> 00:18:15,052
[Matt Smukall] A
mountain underwater.
287
00:18:28,649 --> 00:18:30,692
[Pilot] Shark port side.
288
00:18:31,276 --> 00:18:32,611
{\an8}[Matt Smukall] Oh yeah.
289
00:18:32,694 --> 00:18:34,029
{\an8}There it is there, night shark.
290
00:18:34,113 --> 00:18:36,615
{\an8}Oh came right under the...
291
00:18:37,407 --> 00:18:39,034
came darting under the uh...
292
00:18:39,118 --> 00:18:41,787
[Zoleka Filander]
There it is. Port.
293
00:18:41,870 --> 00:18:43,622
[Matt Smukall] Ah.
294
00:18:45,582 --> 00:18:47,000
He darted off pretty quick.
295
00:18:47,084 --> 00:18:49,294
[Zoleka Filander] Yep.
296
00:18:56,385 --> 00:18:59,096
[Pilot] We are at the top.
297
00:18:59,721 --> 00:19:02,182
[Zoleka Filander]
Ah look at this.
298
00:19:03,475 --> 00:19:05,811
[Pilot] Control,
control this is Neptune.
299
00:19:05,894 --> 00:19:08,272
We are at the top of
the first pinnacle.
300
00:19:08,355 --> 00:19:11,358
Depth 408 meters.
301
00:19:12,401 --> 00:19:16,029
[Zoleka Filander] The minute
we got to the top,
302
00:19:16,738 --> 00:19:19,241
it was beautiful.
303
00:19:20,075 --> 00:19:22,703
Absolutely stunning.
304
00:19:22,786 --> 00:19:24,955
[Pilot] Guys do we wanna
move to the next pinnacle?
305
00:19:25,038 --> 00:19:27,166
[Matt Smukall] Yep. Yep.
306
00:19:31,003 --> 00:19:33,547
[James Cameron] Now the sub
and ROV teams begin to survey
307
00:19:33,630 --> 00:19:36,925
the pinnacle field,
looking for sharks.
308
00:19:38,385 --> 00:19:39,845
[Matt Smukall] Oop
little shark here.
309
00:19:39,970 --> 00:19:41,346
[Pilot] Oh yeah.
310
00:19:42,306 --> 00:19:44,391
{\an8}[James Cameron] A
dusky smooth hound.
311
00:19:45,184 --> 00:19:47,060
{\an8}[Erin Spencer] Ohh.
Look, shark, shark, shark.
312
00:19:50,022 --> 00:19:52,608
{\an8}[James Cameron]
And a Tiger shark.
313
00:19:53,901 --> 00:19:56,653
Just like Atlas, tiger sharks
must cross hundreds of miles
314
00:19:56,737 --> 00:20:00,073
of open ocean to find
their way to Bimini.
315
00:20:04,953 --> 00:20:07,414
And this complex field of
pinnacles could hold the key
316
00:20:07,497 --> 00:20:10,667
to getting them there.
317
00:20:11,501 --> 00:20:13,795
[Aldo Kane] When I'm navigating,
I don't just use a map
318
00:20:13,879 --> 00:20:16,465
and compass to
find out where I am.
319
00:20:16,548 --> 00:20:20,802
I use other senses like sight
to look for landmarks and
320
00:20:20,886 --> 00:20:24,473
that's what we think sharks
are doing but with smell.
321
00:20:33,440 --> 00:20:35,025
[James Cameron] As water
from the Gulf stream hits the
322
00:20:35,108 --> 00:20:38,362
towering pinnacles, nutrient
rich water is forced to the
323
00:20:38,445 --> 00:20:42,241
surface, creating
distinctive 'scent trails'.
324
00:20:45,577 --> 00:20:48,664
Sharks like Atlas, with their
powerful sense of smell,
325
00:20:48,747 --> 00:20:51,541
are able to detect these
scent trails and follow them,
326
00:20:51,625 --> 00:20:56,296
like an underwater signpost
pointing straight to Bimini.
327
00:20:59,633 --> 00:21:02,010
The discovery of this vast
pinnacle field could finally
328
00:21:02,177 --> 00:21:06,223
answer how these sharks locate
this tiny group of islands.
329
00:21:07,224 --> 00:21:09,851
But once here, does this
unique adaptation give them
330
00:21:09,935 --> 00:21:12,938
any other advantages?
331
00:21:18,568 --> 00:21:22,197
The team meets in the mixed
reality lab to investigate.
332
00:21:29,830 --> 00:21:34,459
[Aldo Kane] I notice just how
huge that cephalofoil is and
333
00:21:34,543 --> 00:21:36,336
then underneath it how,
334
00:21:36,420 --> 00:21:40,048
how small in comparison
the, the mouth is.
335
00:21:40,340 --> 00:21:42,259
[Matt Smukall] You can tell
they're just not designed to
336
00:21:42,342 --> 00:21:45,053
take down massive prey but
what they are designed to do
337
00:21:45,137 --> 00:21:47,848
is actually chase down rays
or smaller sharks and use that
338
00:21:47,931 --> 00:21:50,976
big cephalofoil, almost
sometimes pin down the animal
339
00:21:51,059 --> 00:21:53,020
and then that that mouth is
right underneath there and
340
00:21:53,103 --> 00:21:55,063
they could potentially, you
know, bite off one of the
341
00:21:55,147 --> 00:21:57,566
wings of a stingray and
kind of incapacitate it.
342
00:21:57,649 --> 00:21:59,776
[Eric Stackpole] But also
they're a sensing machine right?
343
00:21:59,860 --> 00:22:03,071
They've got all these um, you
know sensing olfactory glands,
344
00:22:03,155 --> 00:22:06,700
they can detect electrical
signals from fish and
345
00:22:06,783 --> 00:22:08,744
I imagine that's
got to be useful?
346
00:22:08,827 --> 00:22:10,912
[Matt Smukall] Yeah, and and
having all of those senses
347
00:22:10,996 --> 00:22:14,416
spread out over a wider area
can probably help them hone in
348
00:22:14,499 --> 00:22:16,752
on certain things like
a stingray that's buried
349
00:22:16,835 --> 00:22:18,337
under the sand.
350
00:22:18,420 --> 00:22:20,505
[Zoleka Filander] So it's the
spread out array that's making
351
00:22:20,589 --> 00:22:23,633
the Hammerhead sharks
such an accurate hunter?
352
00:22:23,717 --> 00:22:25,177
[Matt Smukall] Absolutely.
353
00:22:25,260 --> 00:22:27,387
That's what allows them to be
such an efficient predator.
354
00:22:38,857 --> 00:22:42,736
[boat motor rumbling]
355
00:22:42,819 --> 00:22:45,655
[James Cameron] To observe the
shark's hammerhead in action
356
00:22:45,739 --> 00:22:48,992
Aldo and Matt are going out
with a camera tag designed
357
00:22:49,076 --> 00:22:52,329
to give them a
view rarely seen.
358
00:22:56,041 --> 00:22:59,294
[Aldo Kane] 1, 2, 3 go.
359
00:23:01,922 --> 00:23:04,007
[James Cameron] But to attach
it, first they must get
360
00:23:04,132 --> 00:23:07,719
up close and personal
with the hammerheads.
361
00:23:17,354 --> 00:23:20,315
[Aldo Kane] She is big.
362
00:23:21,108 --> 00:23:22,859
These sharks are huge.
363
00:23:22,943 --> 00:23:26,947
They can be up to 900 pounds
and when you're in the water,
364
00:23:27,030 --> 00:23:29,282
they are all around you.
365
00:23:29,366 --> 00:23:30,867
You need your
head on a swivel.
366
00:23:31,326 --> 00:23:34,788
But with this mask you get
quite a lot of tunnel vision.
367
00:23:46,174 --> 00:23:48,885
Shark coming in your right.
368
00:23:50,137 --> 00:23:52,514
[Matt Smukall]
Alright here we go.
369
00:24:03,400 --> 00:24:06,069
[♪ dramatic music]
370
00:24:06,153 --> 00:24:08,905
[Aldo Kane] Here she comes.
371
00:24:14,202 --> 00:24:15,787
Almost, almost.
372
00:24:18,039 --> 00:24:19,875
Coming in again.
373
00:24:31,553 --> 00:24:32,888
Ah man that's on.
374
00:24:35,140 --> 00:24:37,058
[Matt Smukall] Yeah that one
looked like it went
375
00:24:37,142 --> 00:24:39,311
on really well.
376
00:24:42,189 --> 00:24:44,191
Topside, topside.
377
00:24:44,274 --> 00:24:48,570
If you copy, that's
successful deployed tag.
378
00:24:56,328 --> 00:25:03,043
[♪ peaceful music]
379
00:25:05,504 --> 00:25:11,176
[James Cameron] After
eight hours, the tag releases.
380
00:25:14,804 --> 00:25:17,933
And once retrieved, the
footage is ready to view.
381
00:25:19,184 --> 00:25:21,019
[Matt Smukall] You know you can
actually just see what a
382
00:25:21,144 --> 00:25:23,647
nice view these cameras are
giving us of what the shark's
383
00:25:23,730 --> 00:25:26,900
actually doing
in that habitat.
384
00:25:31,530 --> 00:25:33,573
[Zoleka Filander] He's got his
head down, and scanning
385
00:25:33,740 --> 00:25:35,992
back and forth.
386
00:25:36,409 --> 00:25:38,578
It looks like it's hunting.
387
00:25:44,459 --> 00:25:46,586
[Matt Smukall] He's cruising
along relatively calm,
388
00:25:46,795 --> 00:25:49,881
probably looking
for some prey there.
389
00:25:50,298 --> 00:25:52,300
[Zoleka Filander] Yeah they
generally cruise at
390
00:25:52,384 --> 00:25:55,887
five miles per hour and they can
burst to like 20 miles per hour.
391
00:25:56,137 --> 00:25:57,931
Look he's picking up speed.
392
00:25:58,348 --> 00:26:01,226
He must have gotten
his eyes on something.
393
00:26:11,319 --> 00:26:14,823
With its wide-angle field of
view, this camera tag reveals
394
00:26:14,906 --> 00:26:18,493
where the great
hammerhead is hunting.
395
00:26:18,577 --> 00:26:21,496
[Matt Smukall] That little
strip along the the reef where
396
00:26:21,580 --> 00:26:24,207
you kind of have the
convergence of two habitats.
397
00:26:24,291 --> 00:26:26,334
You have the the seagrass
flats coming to meet the
398
00:26:26,418 --> 00:26:28,086
the reef area.
399
00:26:28,169 --> 00:26:30,589
That is the area that they're
using most of the time and
400
00:26:30,672 --> 00:26:32,966
probably hunting in both
of those types of habitats.
401
00:26:33,049 --> 00:26:35,135
[Zoleka Filander] Yeah.
402
00:26:40,849 --> 00:26:43,310
[Eric Stackpole] Is this,
this is night-time now.
403
00:26:49,649 --> 00:26:52,277
[James Cameron] Even in the
pitch-black waters of the night,
404
00:26:52,360 --> 00:26:54,821
using its electro sensors,
this hammerhead...
405
00:26:54,904 --> 00:26:56,323
[Zoleka Filander] Fish.
406
00:26:56,406 --> 00:26:58,241
[James Cameron] Can
still detect prey.
407
00:26:58,325 --> 00:26:59,826
[Zoleka Filander] Whoa.
408
00:26:59,909 --> 00:27:03,371
He senses the fish and
goes precisely at it.
409
00:27:04,080 --> 00:27:06,750
He's sensing the
electric field, or vibration.
410
00:27:06,833 --> 00:27:11,254
This network of sensors that you
find along this broad head.
411
00:27:13,757 --> 00:27:15,342
[James Cameron]
No luck this time.
412
00:27:15,425 --> 00:27:18,011
But the team has gained
key information on where
413
00:27:18,094 --> 00:27:20,722
the hammerheads are hunting.
414
00:27:23,683 --> 00:27:27,604
[seagulls cawing]
415
00:27:27,937 --> 00:27:33,526
[boat engine rumbling]
416
00:27:33,610 --> 00:27:35,487
[James Cameron]
Eric and Matt head out,
417
00:27:39,240 --> 00:27:44,037
their destination: the
seagrass flats of Bimini.
418
00:27:50,251 --> 00:27:51,836
[Eric Stackpole] It's amazing
because this is a really
419
00:27:51,920 --> 00:27:53,088
shallow area.
420
00:27:53,171 --> 00:27:54,714
I, I wouldn't have expected
hammerhead sharks to come
421
00:27:54,798 --> 00:27:55,924
around here.
422
00:27:57,258 --> 00:27:59,052
[James Cameron] These shallows
are home to the hammerheads'
423
00:27:59,135 --> 00:28:03,556
{\an8}favorite prey,
the southern stingray.
424
00:28:03,640 --> 00:28:05,183
{\an8}[Matt Smukall] Look
at all the stingrays.
425
00:28:05,266 --> 00:28:07,143
But see how they're all right
up close up to the shore?
426
00:28:07,769 --> 00:28:10,313
[James Cameron] These waters
offer the rays protection,
427
00:28:10,897 --> 00:28:12,732
and a place to hide.
428
00:28:16,945 --> 00:28:19,906
Too shallow for
most predators.
429
00:28:19,989 --> 00:28:23,535
But not the great hammerhead.
430
00:28:29,791 --> 00:28:32,210
It's a shallow
water specialist.
431
00:28:37,716 --> 00:28:40,218
And these rays
carry the scars.
432
00:28:42,721 --> 00:28:44,681
[Matt Smukall] You can see right
there at the base of her tail.
433
00:28:44,931 --> 00:28:47,142
She actually no
longer even has a barb.
434
00:28:47,600 --> 00:28:49,644
So you can imagine that might
be from a shark coming in and
435
00:28:49,769 --> 00:28:51,479
biting off a
section of that tail.
436
00:28:53,189 --> 00:28:55,358
[James Cameron] Now they know
what and where the hammerheads
437
00:28:55,442 --> 00:29:00,488
are hunting, the
team sends up the Helo.
438
00:29:04,909 --> 00:29:11,040
[helicopter whirring]
439
00:29:17,380 --> 00:29:19,924
If the aerial crew can
capture footage of a hunt,
440
00:29:20,008 --> 00:29:21,676
the team on the ship
441
00:29:21,760 --> 00:29:24,053
will see how the
hammerhead is uniquely
442
00:29:24,137 --> 00:29:26,723
adapted to life
in these shallows.
443
00:29:28,224 --> 00:29:33,354
[helicopter whirring]
444
00:29:37,317 --> 00:29:43,448
[helicopter whirring]
445
00:29:45,492 --> 00:29:48,828
[James Cameron] The aerial crew
returns with footage to share.
446
00:29:56,544 --> 00:30:00,173
Once again the shark is
head down looking for prey
447
00:30:03,259 --> 00:30:05,845
[splashing]
448
00:30:05,929 --> 00:30:09,766
and this time it finds it.
449
00:30:13,228 --> 00:30:15,271
[Erin Spencer] The
tail movement is wild.
450
00:30:16,689 --> 00:30:17,732
[Eric Stackpole] Oh!
451
00:30:17,816 --> 00:30:20,401
[Erin Spencer] Oh yeah.
452
00:30:20,527 --> 00:30:22,695
[Eric Stackpole] Look
how quick it can turn.
453
00:30:22,779 --> 00:30:24,948
[James Cameron] To lock on
this stingray, the hammerhead
454
00:30:25,073 --> 00:30:26,783
attacks from the side.
455
00:30:27,116 --> 00:30:29,410
[Zoleka Filander] These waters
are only one meter deep,
456
00:30:29,869 --> 00:30:33,498
it's really well adapted for
hunting in these shallow waters.
457
00:30:34,582 --> 00:30:36,334
[Matt Smukall] As the water
starts murking up she's still
458
00:30:36,417 --> 00:30:38,920
able to use all her other
senses beside sight to keep
459
00:30:39,003 --> 00:30:41,631
tracking that ray down.
460
00:30:42,298 --> 00:30:49,097
[splashing]
461
00:30:49,514 --> 00:30:51,099
[Eric Stackpole] In this
visibility it must be using its
462
00:30:51,182 --> 00:30:54,310
electro receptors to detect the
electrical signal from the ray.
463
00:31:00,108 --> 00:31:02,026
[Zoleka Filander]
This is so wild!
464
00:31:02,110 --> 00:31:05,947
[splashing]
465
00:31:06,030 --> 00:31:09,367
[Erin Spencer] This is
really a gem of an encounter.
466
00:31:09,450 --> 00:31:10,785
[Zoleka Filander] Oh, hectic!
467
00:31:10,869 --> 00:31:13,580
Look at those sharp turns.
468
00:31:13,663 --> 00:31:20,378
[splashing]
469
00:31:21,421 --> 00:31:24,090
[splashing]
470
00:31:24,173 --> 00:31:26,134
[Matt Smukall] The shark is
trying to pin that ray down
471
00:31:26,217 --> 00:31:29,345
whereas the ray's trying
to come up to the surface.
472
00:31:30,179 --> 00:31:32,724
Which is basically the safest
spot because the mouth is
473
00:31:32,807 --> 00:31:34,601
actually on the
underside of that shark.
474
00:31:36,102 --> 00:31:41,107
[splashing]
475
00:31:44,152 --> 00:31:45,904
[Eric Stackpole] The
hammerhead is making much
476
00:31:45,987 --> 00:31:47,989
tighter turns than I would
have pictured possible for an
477
00:31:48,072 --> 00:31:49,407
animal that size.
478
00:31:49,490 --> 00:31:51,701
You know maybe even the
cephalofoil is useful as, as
479
00:31:51,784 --> 00:31:54,579
being a sort of extra control
surface to help it get those
480
00:31:54,662 --> 00:31:57,165
tighter turns.
481
00:32:00,335 --> 00:32:02,170
[Matt Smukall] It does shows
you how powerful and agile
482
00:32:02,253 --> 00:32:03,588
they are.
483
00:32:03,838 --> 00:32:05,506
[Eric Stackpole] I mean the
hammerhead is like a perfect
484
00:32:05,590 --> 00:32:08,384
ray hunting machine.
485
00:32:10,511 --> 00:32:11,554
[Matt Smukall] Right there.
486
00:32:11,638 --> 00:32:14,182
[Erin Spencer]
Yeah, yeah, yeah, yeah.
487
00:32:14,974 --> 00:32:20,104
You can see the instant
that, that ray is captured.
488
00:32:22,982 --> 00:32:26,235
[James Cameron] Rarely filmed
in its entirety, the hunt
489
00:32:26,319 --> 00:32:28,780
lasts nearly four minutes.
490
00:32:28,863 --> 00:32:34,118
A long arduous battle of
attrition, finally won
491
00:32:34,202 --> 00:32:35,536
by the great hammerhead.
492
00:32:40,124 --> 00:32:41,376
[Eric Stackpole] It's
the ultimate shark
493
00:32:41,459 --> 00:32:42,877
for this environment.
494
00:32:53,179 --> 00:32:59,894
[♪ dramatic music]
495
00:33:01,020 --> 00:33:03,564
[James Cameron] In their time
following the great hammerheads,
496
00:33:04,399 --> 00:33:06,567
the team has deep
dived into the world of
497
00:33:06,651 --> 00:33:09,320
this mysterious creature.
498
00:33:13,366 --> 00:33:16,577
[Aldo Kane] The great
hammerhead has a sixth sense.
499
00:33:16,744 --> 00:33:20,623
Opening up a magnetic map,
leading it across the ocean
500
00:33:20,748 --> 00:33:23,543
and that is just incredible.
501
00:33:28,047 --> 00:33:29,590
[James Cameron] They've
revealed hidden landscapes
502
00:33:29,674 --> 00:33:31,634
on the ocean floor.
503
00:33:32,010 --> 00:33:33,511
[Eric Stackpole] Oh my gosh.
504
00:33:33,594 --> 00:33:35,638
[Zoleka Filander]
Absolutely stunning.
505
00:33:37,265 --> 00:33:39,559
Every single time we scan the
seafloor, we find something
506
00:33:39,642 --> 00:33:41,310
that we never knew existed,
507
00:33:42,228 --> 00:33:45,398
and these are the
sort of clues that help us
508
00:33:45,481 --> 00:33:47,817
solve the greatest
ocean mysteries.
509
00:33:50,278 --> 00:33:52,113
[James Cameron] And they've
captured images that offer
510
00:33:52,321 --> 00:33:54,657
a rare insight into
the lives of these
511
00:33:54,824 --> 00:33:57,076
little-understood creatures.
512
00:33:58,286 --> 00:34:00,663
[Eric Stackpole] I mean the
camera tag got us right in there
513
00:34:00,830 --> 00:34:02,665
and we got to spend a
day watching what the
514
00:34:02,749 --> 00:34:04,500
shark does from its perspective.
515
00:34:08,504 --> 00:34:12,550
{\an8}[helicopter whirring]
516
00:34:15,344 --> 00:34:17,805
{\an8}[James Cameron] The team was
able to study hammerheads here
517
00:34:17,889 --> 00:34:20,808
{\an8}because the Bahamas
is a shark sanctuary.
518
00:34:21,100 --> 00:34:22,852
But elsewhere in our oceans,
519
00:34:22,935 --> 00:34:25,229
great hammerheads are
critically endangered
520
00:34:25,313 --> 00:34:26,564
and they need our protection.
521
00:34:27,065 --> 00:34:29,776
{\an8}We have to do all we can to
safeguard the future of this
522
00:34:30,109 --> 00:34:32,028
{\an8}extraordinary species.
523
00:34:37,116 --> 00:34:42,538
{\an8}[♪ peaceful music]
41761
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