All language subtitles for Shark Week 2020 Great White Double Trouble [13-08-2020] [MKV]_track3_eng

Narrator: In australia,
the sharkiest place on earth,

scientists make
an astonishing discovery.

There's not one population
of great whites down under,

there's two.

Man: Whoa, oh, oh, oh!

Narrator: And one...

Man: That is
a much different face,

look at that.

Narrator: ...Appears way
more deadly than the other.

A little terrifying,
to be honest.

Narrator:
Now experts are asking,

could it be a super predator?

♪♪

to find out, they put the two
shark tribes head to head...

♪♪

...In a great white face off.

Man: Wow.

Narrator: Buckle up.

4,000!

Narrator: It's double trouble
down under.

-- Captions by vitac --
www.Vitac.Com

captions paid for by
discovery communications

♪♪

australia's apex predator --

the great white shark.

Around 7,000 of them patrol
the oceans down under.

[ sirens wailing ]

beneath the water's surface,
a deadly mystery is unfolding.

♪♪

and it's caught the attention

of shark encounter
survivor paul de gelder.

♪♪

de gelder: We've stumbled upon
a really curious mystery here

in australia
with the great white sharks.

We've been looking at the stats
and we noticed that there's way

more deaths on the west coast
of australia than on the east.

And I mean way more, a lot.

Now, we don't really know
why that is.

Narrator: Since 2000,

there have been
just four human fatalities

in the east compared to
a staggering 22 in the west,

that's almost six times
the number of dead.

While it's known that great
whites don't target humans,

and deaths
are tragic accidents,

the disparity between east
and west leaves paul baffled.

Doesn't make sense to me
why the great whites

on the west coast
are creating more fatalities.

It just --
it boggles the mind.

Narrator: A scientific discovery
could offer a clue.

Until 10,000 years ago,

australia was connected
to the island of tasmania

by a land bridge separating
great white sharks

on the east and west.

When the ice age ended,
the ocean levels rose,

allowing the two groups
to mingle.

But they chose not to.

And even today,
they're genetically different,

begging the question,

did one evolve to be more lethal
than the other?

The discovery that there's two
distinct populations

of great white sharks
in australian waters

throws a whole new light
onto our investigation here.

So I'm teaming up
with my friend riley elliot.

He's a shark scientist
from new zealand.

We're gonna try and get to
the bottom of this mystery,

learn how to keep
these sharks safe,

but at the same time,
learn how to keep us safe.

Hello, mate.

Ah, good to see you again.

You good?
-Yeah, man, great.

De gelder:
We've got a mystery to solve.

We've got an adventure to have.

Elliott: You know, it's really
a compare and contrast.

Other great whites
on the west coast, super sharks,

are they more aggressive?
Are they more powerful?

The answer's out there.
We just gotta get to it.

♪♪

narrator: Paul and riley's
investigation

starts at australia's
foster bay,

where they meet up with shark
scientist dr. Paul butcher

to gather evidence
on the east coast

great white tribe.

-How you doing, mate?
-Good.

Nice to finally meet you.

Butch uses smart drumlines

to catch, tag,
and track great whites.

Elliott: What I like about
smart drumlines

is we're actually learning
more about sharks.

We're coexisting
through science.

Narrator:
When a shark takes the bait,

a gps sends a message
to butch's phone.

Butcher: Four years
worth of tagging,

450 odd white sharks

we've caught along
the entire coast.

-450?
-What?

As a scientist,
that is a data city dream.

[ beeping ]

I hear your phone
popping off.

And that's my message now.

Elliott:
Oh, man, I'm excited.

Got a bite, got a bite.

I'm pumped, bro.

♪♪

there's a white shark.

Oh, beautiful.

Oh!

They're such amazing animals.

Narrator: It's a juvenile
around nine feet long,

hunting only yards
from a busy beach.

Wow.

This is only
fractionally smaller

than the shark
that attacked me.

They've modeled actually
the bite force

of a juvenile like this.

And it came in about half
that of an african lion,

which is no small --
no small bite.

They still crush bones.

Narrator: The shark is measured,
tagged, and released.

-Ready?
-Oh!

-Wow!
-Whoo-hoo!

Good job.

Narrator:
A quick reset and right away,

they're back in business

and now there's a shark
within two minutes.

That's moving --
-we're on again.

So we're just set back here.
-What!

I can't believe that!

-This one's a little male.
-Yeah.

Kind of blown away by how many
of these little white sharks

there are, serious,
never seen anything like it.

The average size
of our white sharks

that we're catching
is around 2 1/2,

2.6 meters.
-Wow.

Those elusive adults,

we don't see them,
we don't catch,

and we don't tag.

♪♪

bit of a mystery as to why

these big great whites aren't
along the coastline here.

Just like any good mystery,

when you start asking
one question more pop up.

400 animals have been tagged,

but not one of those
is an adult?

Where are the adults?

Narrator: To find out,
paul and riley split up.

♪♪

while paul heads west
to gather evidence

on the western
great white sharks.

♪♪

riley travels over
1,000 miles southeast

to stewart island,
off of the tip of new zealand.

♪♪

he believes that the elusive
east australian adults

migrate here in summer
in search of food.

Elliott: Stewart island's
a very unique location.

It's cold,
it's in the roaring 40s,

but there's a lot
of sea life here.

Really good hunting ground
for great white sharks.

Narrator:
Seasoned shark cameraman

dave abbott
knows these waters

like the back of his hand.

Abbott: Water looks good.

I see albatross around that's
always to me, a sign of sharks.

♪♪

a-ha, david,
that's a great white

and that's a big one.

This is exactly
what we came here for

to try and find the elusive
east australian adult sharks.

Whoo-hoo.

It's definitely a lot bigger
than what we saw in forster.

That's definitely
not a juvenile.

I'm just excited to see
how this differs and right now

I can just tell you
it's a lot more impressive.

It's a lot bigger.

Oh, jeez.

All day,
this is impressive.

It's just circling around,
it seems to be standoffish.

I've got a feeling
this is another shark, yeah.

They're just sizing
each other up,

who's allowed in first?

♪♪

oh!

♪♪

oh, jeez, that is a much
different face. Look at that.

Jeez!

♪♪

oh, oh, oh!

Wow.

Let's get in there, dave.

♪♪

what ultimately
want to know is

are the adult east australian
great white sharks here?

Narrator: There's only one way
to know for sure.

Find one that bears
one of butch's tags.

♪♪

within minutes, the water
is swarming with great whites.

Whoa!

Amidst the chaos,
riley can't make out a tag.

Elliott: Whoa!

Whoa!

Whoa! Oh, oh, oh!

Oh!

Narrator: Then, he spots
a juvenile among the giants.

Elliott: Wow.

Narrator:
It's the proof he needed.

And there are adults here, too,
some up to 18 feet long.

♪♪

elliott: Wow!

Whoo, wow.

It blew me away.

The might, the speed,
the power.

One shark did turn up,
it had a spot tag.

And this is really
the missing link.

Narrator:
Riley's in the right place,

let the showdown between
east and west begin.

♪♪

coming up, the two tribes
go head to head...

Wow...

Narrator: ...To find out
if the western sharks

are super predators.

And riley makes a sensational
scientific discovery.

Whoa, oh, oh, oh!

Narrator: Beneath the surface
of australia's oceans

lurk two separate populations
of great white sharks.

Statistics show that
in accidental encounters

with humans,
western great whites

are almost six times more deadly
and their eastern cousins.

Could they be
some kind of super predator?

De gelder: Are the western
sharks bigger?

Are they more aggressive?

Or is there something we don't
yet understand going on?

Narrator: To find out,

paul de gelder
and riley elliott

will pit the two shark tribes
against each other.

The categories for testing
will be size,

bite force,

and hunting behavior.

Riley's already
located his eastern adults

at stewart island.

Now, paul's hunting for
the deadly western great whites

at the neptune islands

where he teams up
with shark scientist

dr. Charlie huveneers.

Charlie's research
involves tagging

and tracking these predators.

-Yes, yes.
-Yeah.

-All right.
-We got him.

Narrator: Data shows that
the same western whites

return here regularly,

with some arriving at almost
exactly the same time each year.

There's fur seals,
the sea lions,

so the sharks here are looking
for that fat, juicy food.

♪♪

yeah! [ laughs ]

first shark of the trip.

Narrator:
These western whites appear

to be more lethal
than their eastern cousins.

Look at that power.

Narrator: Could that be,
because they are bigger sharks?

Time for test number one --
size.

Yeah, let's get in the water.

♪♪

I'm gonna jump in the cage now

and I'm gonna utilize this
really great piece of technology

we've got called
a stereo camera

that accurately measures
the length of every shark.

So this is really important
because we want to document

how large these sharks
are out here on the west side

and compare them to the east.

♪♪

narrator:
Paul's goal is to measure

the biggest shark he can find.

Wow.

Whoo-hoo-hoo-hoo!

Narrator: Software factors
in the distance

between the two cameras,
then aligns the images

to accurately measure
the size of the shark.

♪♪

paul captures a range
of great whites.

And the winner
is almost 15 feet long

about the length of an suv.

♪♪

that was awesome.

As soon as we got down there,
he came straight up to the cage,

had a little nibble,
his face was right here.

It was amazing, so inquisitive.

A little aggressive, a little
terrifying, to be honest.

♪♪

what a shark.

♪♪

narrator:
Back at stewart island,

riley prepares to find out

how the eastern whites measure
up using laser cam technology.

So on the shark
and basically as I swim by,

you can get these lasers
on me.

Narrator: Two parallel beams
exactly one foot apart,

work like an underwater ruler.

When we take a still grab
from your video.

There's a 12-inch ruler
that's on the shark

and we can extrapolate how big
the shark actually is.

Yeah.

♪♪

narrator: Riley's plan --
head to the ocean floor,

where he hopes
the largest sharks are lurking.

♪♪

elliott: One, you gotta put
that cage on the bottom

in one of the most
notorious areas of the world

for aggressive and high numbers
of great white sharks.

It's probably the most
dangerous aspect of this trip.

♪♪

narrator: Giants close in
on the cage one by one.

Then suddenly,
the water clears.

♪♪

♪♪

whoa!

Narrator:
Measurements in the back,

they resurface
to study the data.

Oh, dave, that was incredible.

It's very much stepping
into their world, wasn't it?

Yeah...
[ speaks indistinctly ]

oh.

Oh, nice data,
there's a great one.

Look, you can see these
lasers perfectly.

Oh, nice.

There we go.
There's that big female.

Beautiful girl.

That shark's 5.1 meters.

I mean, that there is a mature
female great white shark.

She's likely 35 to 50 years old.
Truly an incredible animal.

Narrator: Riley's shark
beats paul's for size.

It's clear the eastern
great whites

are every bit as big
as their western cousins.

So why do western sharks account
for almost six times

more accidental human deaths?

Coming up,

two tribes
in the great white bite off.

4,000! And he's gonna
tell them that.

Oh, jeez!

Narrator:
And a jaw-dropping discovery.

Man: Whoo-hoo-hoo!

♪♪

man: Wow.

Narrator: In australia,

a study has revealed two tribes
of great white sharks.

Elliott: Whoa!

Those in the west
appear to be more deadly

than those in the east.

To find out why

experts put together
a white shark showdown.

The first test ruled out size
as a factor.

So could the difference lie
in the power of their jaws?

Elliott: Do they have sharper
teeth, bigger teeth,

larger jaw structure.

The only way to really tell
is to get as close

as I can to the sharp end
of the shark.

Narrator: Time for test
number two -- bite force.

♪♪

so what I've got here
is a bite meter.

This is some high density foam
with some sensors in here

that simply measure
downward pressure.

And obviously in this case,
that's the jaws of the shark.

So is charlie and paul
doing the same thing

in west australia?

Yeah, they have the exact
same device as this.

♪♪

bombs away.

♪♪

here it comes.
He's looking at it.

Narrator: Using tuna,

dave tempts a big male
towards the bite pad.

Oh, there it is.
It's coming in.

Oh, oh, oh, jeez.

Just wait for a second,
if it turns back.

♪♪

oh! Jeez!

Almost, davey, almost.

Narrator: While riley struggles
to get a bite,

in australia's neptune islands,

shark attack survivor
paul de gelder goes fishing

for a western white.

This bite pad data
is really interesting to me,

especially on a personal level,

because when the bull shark
bit me in sydney harbor,

the first thing
I remember feeling

was that immense pressure.

So to get a clear indication
of how much actual bite force

these great white sharks have,

I think that's really
gonna blow me away.

This information is going
to give us more data

so that we can accurately create
better shark mitigation policies

to protect sharks and humans
and that's the main goal.

We've got a decent sized shark
coming up to visit.

[ speaks indistinctly ]

no.

He's made a few passes
on the bite pad,

but he hasn't
quite grabbed it yet.

Yes, yes, yes.

Oh.

♪♪

here we go. Here we go.

Yep, coming through
the pad.

Yep, really close,
really close.

-Oh!
-Yep, yep, yep, yep.

Whoo-hoo-hoo-hoo.

Yes! Yay!

♪♪

yeah!

That's what we want, buddy,
yeah.

-Finally we got one.
-Yeah.

Whoo-hoo.

So we just got a reading
on the bite pad.

And look, I'm no scientist,
but I'm pretty sure

that was strong enough
to bite through a human limb.

♪♪

predictive model for three
and a half meter shark

was about 2,000 newton
to a 6,000 newtons --

mm-hmm.

...And the bite that we got from
about a similar size shark's

was between 3,000
and 4,000 newtons.

Narrator: At that reading,
each bite is like being hit

with the force
of a charging bull.

And one of these bites
registered at more than

4,500 newtons,
which is a lot.

Yeah, that's a big bite.

Narrator:
So do eastern whites cause

fewer human fatalities
because they have a weaker bite?

Elliott:
Oh, might turn back on it.

Narrator:
Back at stewart island.

Riley is about to find out.

♪♪

oh, dave, yes!

♪♪

2,000!

♪♪

2,500! 4,000!

Oh, jeez!

4,300.

Oh, man,
he's got a tail on that.

4,600.

♪♪

and now he's off. Oh.

What have we got?
Oh, oh, oh, oh!

Oh, my god.
-[ laughs ]

wow, I don't even think
I need to actually look back

at the measurements.
That is intense.

I mean.

There's no doubt that the great
white sharks from east australia

definitely have bite to them.

The numbers there
when he first got purchase,

he bit, you know,
at the start here.

Yeah, with the tip
of their mouth,

at anterior part of their mouth,
that was 1,200.

He started getting purchase,
it just skyrocketed.

When I pushed peak here,
the peak here was 4,600 newtons.

We put that into pounds,

it's about 1,000 pounds
of pressure.

Narrator: Test number two
is a photo finish.

Similar size sharks,
almost identical bite power.

Clearly, there's no difference
in the bite force of sharks

from east australia
or western australia,

but there is
a significant difference

in the statistics
of fatalities.

So there's more to uncover.

We just got to
keep looking for it.

Narrator:
Size and bite force tests

reveal no big difference
between the two tribes.

So could it all come down
to hunting behavior?

Are western great whites
a more calculated,

ruthless predator?

For me,
that's the big question.

Narrator:
Scientists have discovered

two different tribes
of great whites in australia --

east coast and west coast.

Paul de gelder and riley elliott
are trying to discover

why the western sharks
are apparently

more deadly to humans.

Size and bite force tests
have shown both tribes

to be equally fearsome.

Elliott: Oh, man,
he's got a tell on that.

Now this one final test --
hunting behavior.

Elliott: Is the way
the great whites hunt

on the east different
from on the west?

♪♪

narrator:
In the neptune islands,

paul, studying the western
whites' predation techniques.

De gelder: This is great
watching these mature sharks.

You just don't see 'em
for a while.

They disappear,

and then all of a sudden,

they just charge in,
take the bait.

It's really awesome
to watch from the surface.

They just come out of nowhere.

Narrator: To get a closer view
of their ambush attack method,

paul all breaks out
a shark's-eye-view.

A tag equipped with a camera
and accelerometer

to capture sudden
bursts of speed.

So the shark's-eye-view is going
to give us a clearer picture

of how they're
hunting in this area?

Exactly. If you only
get the acceleration,

you don't really know
what they're doing.

You know they're accelerating,
but you don't know what for.

♪♪

narrator:
To attach the tag to its fin,

they'll need to bring
the shark right up to the boat.

De gelder: Getting a fin cam on
the back of a great white shark

is always a challenge, but
the data that you get from that,

the p.O.V. Is just such
a wealth of knowledge,

it's so worth it to get it done.

On the left. On the left.
Yep. Yep. Yep. Yep. Yep.

-Yeah!
-Got it!

[ all cheering ]

de gelder:
48 hours, that's gonna pop off.

We'll retrieve it and be able
to plug it into the computer

and check out the footage.

Narrator: Two days later,
they retrieve the camera.

♪♪

all right, mate.
What have we got?

Huveneers: We can see
the footage from the camera.

Awesome.

The western great white begins
by cruising the shallow reefs.

♪♪

then it goes deep.

♪♪

when it spots something
on the surface,

there is a burst of speed...

♪♪

...As it ambushes its prey.

♪♪

de gelder:
What the sharks are doing here
is they're going to the bottom,

planning their strategy
and then just exploding

to the surface with
killing it in mind.

Narrator:
Calculated, committed, clinical.

♪♪

what's more, tracking data

shows these sharks migrate

between the remote neptunes

and australia's west coast
population centers.

De gelder: These sharks will
soon be going up the west coast

and they're going to be very
hungry from their long swim,

looking for appraisals.

Narrator: Seal colonies await,
but so do surfers.

Anyone mistaken for food
would stand little chance.

♪♪

de gelder: These are large
adult white sharks,

and that could be
one of the main reasons

why we're having so many
fatalities on the west coast.

So do riley's
eastern great whites

have a different technique,

one less lethal to humans?

Elliott: Are the east coast
sharks here on stewart island

predating in a way that's
as committed as on the west?

Or it's a different
hunting tactic?

Narrator:
To get to the bottom of it,

riley heads back
to the ocean floor

in search of
the biggest predators.

♪♪

but then riley witnesses
something extraordinary.

Could this be a breeding ground?

♪♪

witnessing great white mating

is the elusive
holy grail of shark science.

This might be as close
as anyone's ever gotten.

Elliott: [ laughs ]

while riley is focused
on this unique behavior,

the mood in the water
suddenly changes.

♪♪

[ static ]

♪♪

narrator: Riley eliot and
dave abbott are at the bottom

of the ocean gathering evidence
on how eastern great whites hunt

when their cage starts to tip.

♪♪

just in time, it rights itself.

But the sharks continue
to swarm.

♪♪

with adults and juveniles
in one place,

riley's team invites them
to hunt.

♪♪

just weeks ago, really found
australia's east coast

teeming with juveniles
and sub-adults like these.

They close in at surface level,

nipping at their prey
with short, sharp bites.

A human might survive these
sorts of exploratory bites.

But down below,
the huge sharks are lurking...

...Eyeing the bait.

Elliott: Oh! [ chuckles ]

whoa!

[ chuckles ]

[ chuckles ]

narrator: These eastern adults
hunt just as aggressively

as paul's western great whites.

♪♪

they are just as big,
their jaws just as strong.

Two populations,
but one species.

In the great battle
of east versus west,

it's a dead heat.

I can't believe it.
I honestly can't believe that.

It's awesome, isn't it?

[ laughs ]
that was insane, man.

♪♪

oh, mate.

It's like a freight train
of sharks for a little
while there, wasn't it?

That's the largest array

of great white sharks
I've ever seen.

And look -- that is a rare thing
to see anywhere on earth.

So much unique.
It's unique, I feel.

I feel like that was something
really special.

I was blown away,
how obvious the difference

between juvenile behavior,
sub-adult behavior,

and adult white shark
behavior is.

All those younger animals will
come in right up at the surface,

swimming slowly in clear view,

and kind of miss things,
nibble on things,

versus the mature sharks
are very much on the bottom,

stealthy and slow.

And then you see them look up,

and what they want, bang!

♪♪

and that was the big
standout difference

between that adult shark
and the sub-adult sharks,

and I think that is literally
the point of fatality.

[ chuckles ]

♪♪

it's the end of an investigation

that has its starting point
millions of years ago,

when two tribes of great white
sharks evolved separately.

Today, they record different
rates of human fatalities.

But it's not because one tribe
is more deadly than the other.

It's likely the age of
the sharks that come in-shore.

We set out to investigate

why the great white sharks
on the west coast

seem to be more lethal to humans
than the sharks on the east.

What we've discovered
on the east coast

is a much larger population
of young white sharks.

These sharks are
more likely to bite,

but less likely to kill.

Narrator: On the west,
large colonies of seals

attract the big sharks
into coastal waters,

where humans recreate.

De gelder:
These are the perfect conditions

for a deep water ambush,

and if the surfer
gets in the way...

It's all over.

Narrator: Paul and riley's
findings can reduce the risk

if we understand and respect
the realm of the great white.

Elliott:
This is a marine environment
where the top predator roams.

If we go there to recreate,

we must understand
the environments we go into.

We must understand the risk.

Elliott:
To the next one, eh?

De gelder: Let's go find
some sharks somewhere else.

[ laughs ]