All language subtitles for In Search Of s01e03 Monsters of the Deep.eng

[thunderclap]

[Zachary Quinto] The great oceans of the Earth--

mysterious,

thousands of feet deep,

virtually unexplored.

Beneath these waters

lurk unknown creatures.

Many of them ferocious.

No one knows this better
than Australian teenager Sam Kanizay.

[Sam]
It was about 6:00 at night, a full moon.

I was standing in the water
to ice my legs,

and 'cause of the cold,
my legs went numb.

When I stepped out of the water,
I realized that my feet were covered in blood.

Something had eaten my legs,
and I had no clue what it was

or where it came from,
and why it attacked me.

[Quinto]
With so little known about our oceans,

who's to say what really
lies beneath?

Could the creatures
of our nightmares actually exist?

My search begins now.

My Name is Zachary Quinto.

As an actor,
I've played many supernatural characters

that blurred the line
between science and fiction.

I'm drawn to the unknown,
the otherworldly,

and those experiences
so beyond belief,

they call everything
into question.

I'm exploring some of
the most enduring mysteries

that continue to haunt mankind
in search of the truth...

wherever it leads me.

Since the beginning of time,
countless myths and legends

have described strange,
savage creatures in the world's oceans...

hunting humans

and dragging them
beneath the waves,

from the serpent Leviathan
found in the Book of Job

to the Loch Ness Monster,

reportedly photographed
in the Scottish Highlands.

There's also been
a recent surge in viral sightings,

like the Montauk Monster
spotted off the coast of Long Island,

and the Texas City creature

which washed ashore
after Hurricane Harvey.

These monsters come
in all shapes and sizes,

and with so much ocean
completely unexplored,

who knows what hides
in its depths?

Today I'm meeting
with 17-year-old Sam Kanizay,

an Australian teenager
who survived his own underwater nightmare--

an attack by a mysterious
flesh-eating sea creature.

So, this is where
it happened, eh?

[Sam]
Yeah, this is the bay, just down there.

Port Phillip Bay,
Brighton Beach.

So walk me through
the experience that you had that night.

It was nighttime, right?Yeah. Yeah, it was about 6:00.

I was in a football game,
and so I was sore, so I was just icing my legs.

I was standing in the water
for half an hour,

and my legs went numb
'cause of the cold.

'Cause it was that cold? Yeah.

Were you by yourself?Yeah.

By yourself.

So I was just walking
out of the water,

noticed some sand--
or what I thought was sand--

all over my ankles
and lower calf.

So I just washed that off,
and as I walked across the beach,

I noticed that my feet
were covered in blood.

It was just
seeping out everywhere.

I saw some photos which looked grisly.

Were you freaked out?
Were you really scared?

Yeah, I was really shocked,
'cause I just hadn't seen anything like it.

But it was sort of like
thousands of pinholes all in my legs.

You don't have any idea
what caused it?

I had no idea
what was going on.

So what happened
when you got to the hospital? How did the doctors react?

Well, I was sitting
in hospital a few days

just to make sure the bleeding
had actually fully stopped.

And did it take
that long to stop? Yeah.

So they bled for three days?Yeah.

Wow.No one could tell me what
had happened straightaway.

And so everyone
started Googling

to see if they could figure out
what it was.Hmm.

[Quinto] Sam's story went viral in 2017,

capturing
international attention

because of the unusual
and intense nature of the incident.

[newsman]
What attacked 17-year-old Sam Kanizay?

[newswoman]
His legs wouldn't stop bleeding.

A painful warning
about what might lie beneath.

The doctors couldn't really
figure out what caused it?

What were some of the things
that they came back with?

Stingrays or jellyfish. Mm-hmm.

But it was too much blood
for that.

So then you started your healing process.

How long
would you say that took?I was in a wheelchair for a bit.

Wow. You couldn't walk.No. The pain was too much.

And no one could give me
any reason as to why I was bleeding.

This sure is scary,
and, for me,

the kind of unknown of it
would've been unsettling.

Sam's story reminds us
how dangerous these ocean waters can be.

But what makes
his experience scarier

is the fact
that he couldn't even see the flesh-eating sea creatures

that attacked him.

What unknown dangers could lurk in these tranquil waters?

Local experts
at Museums Victoria

know all about
the violent world beneath the ocean surface.

[Quinto] How did the case come to you?

[Dr. Walker-Smith]
The media notified us

that someone had been bitten
by some sort of sea creature.

[Quinto]
I'm meeting with Dr. Genefor Walker-Smith,

who first analyzed
the evidence in Sam's case,

to understand more about
these stealth attackers.

I'll have to admit
that my very first reaction was, was this a hoax?

I'd seen the images.
There was so much blood.

What were some of the things
that you thought might have been the cause?

There's a couple of different
types of crustaceans that it could've been,

but I hadn't ever heard
of any crustaceans causing that level of injury.

So you'd never seen
anything like this injury?No.

So my best guess is

it was probably
a type of amphipods.Amphipods.

Yeah. Sea fleas,

known to feed on dead fish
and dead crabs,

and have been
previously recorded

as biting people. Oh, they have?

There's reports of divers
looking at group swarms of amphipods,

and in one instance,
a diver had them come straight towards his face

and bite him on the face
and around his mask.

I'll show you
a larger version.

So this is one
from the deep sea.

No. Get outta here, Gen.Yeah.

So, they eat dead whales,
dead fish, anything on the bottom of the ocean.

They're cleaning it up.But, like, what if
you had these on you?

Well, but you would never be--

In the deep water like that....in the deep water.

There's related species
that are smaller.

They're about the size
of a Rice Krispie.

So that's just a few.

Sam probably had hundreds
and hundreds of tiny

little pinprick holes
in his legs.

And their legs
are like tiny little needles.

And they've got claws
that are also designed for grasping.

And then,
under the microscope here,

I've dissected
some of the mouth parts.

The really mean-looking
mouth parts.Okay.

It looks like an arm.It does.

It kind of look like
a whole set of steak knives all bunched together.

That would've created
a lot of holes in his skin, is my guess.

Sam said that he was standing
in the very cold water

in one spot
for about 30 minutes.

What if he
was in there longer?Well, they could've started

to really eat
the flesh away.

There's video footage
of an experiment that somebody did

where they put a pig carcass
in a cage, so it couldn't be eaten by any fish.

[gasps]

Ew!I know. It's really gross.

It's covered--
Oh, my God.

Day five, it's just
a bag of bones, basically.

Sam is lucky he got
out of that water, huh?[chuckles]

That's crazy.

It's just a cloud
of these sea fleas.

There are just tons of them.
They move fast.

They're just looking
for a meal.

Their destructive power
is pretty impressive.

I mean, it's one thing to see
these crustaceans attack something that's dead,

but it's another thing
to consider that they attack a live human being.

Yes.Is there anything
about the seasons

or the conditions
of the weather?

We don't know whether or not
they're more prolific in summer or winter.

But there are some tales
where fishermen have actually said

on the night
of a full moon,

if they put their bait
in the water,

ten minutes later,
they'll pull it up,

and their bait's gone.Wow.

Kind of goes in line
with those, you know, old stories

about the mysteries
of the deep.

It's interesting.
It's actually not always

the big things
that you have to worry about.

Sam's attack by
nearly invisible flesh-eaters

makes me wonder
how many other unknown monsters of any size

could be hiding
deep in our oceans.

These things
have been seen regularly,

and by people who are not
prone to making up nonsense.

They exist.
People see them.

They're not having
gigantic mass hallucinations on a global scale.

The reality here is,
if a scientist was to say, "They can't exist,"

that simply means
that you've explored every single ocean in the world.

Only then do you havethe .

If you haven't,
then you don't know what you're talking about,

plain and simple.

[Quinto]
Could there really be unknown life-forms in our waters?

To get a closer look,

I'm diving
with local marine biologist Sheree Marris.

And even though
it's not a full moon,

I'm a little nervous.

I definitely have
a healthy respect for the ocean,

And you should....which sometimes
translates into trepidation.

If I'm being honest.No. And that's good.

And I can understand that.
I mean, we do have some of the most

dangerous animals in the world.Venomous animals, dangerous--

Have you encountered any
or all of that stuff?

Yeah. I've seen stonefish,
which can kill you really quick.

The box jellyfish
is the most venomous animal on the planet.

Can kill you in under two minutes flat.

If we're really lucky today,
we may see the blue-ringed octopus.

It has a head the size of your thumb.

It will bite its prey and inject a neurotoxin so that it can devour it.

What if you were
to get bitten by one? 'Cause it's so small,

would it still have a--It would have an impact.

You'd go into
cardiac arrest. What?

And when it gets really cranky,
it flashes these blue rings

so you know it's cranky.

[Quinto]
That's the thing about Australia that I don't love.

It's those, like, gnarly,
totally camouflaged...

highly venomous things
that'll just kill you if it bites you--

that could just be
under the rock.

And that's what's so scary.

All right. Let's go.Let's do it.

Coming up...It's a giant! [Zachary Quinto] For centuries, creatures of the deep have invaded our nightmares.

Giant squid,
vicious serpents,

and predatory sharks.

Sometimes you can
see these beasts, but sometimes you can't.

Like in the case
of Sam Kanizay, who was attacked

by a swarm
of flesh-eating amphipods.

My feet were covered in blood.
It was just seeping out everywhere.

[Quinto]
Now I'm on a search

to understand
these mysterious creatures

by jumping into Australia's
shark-infested waters,

where nearly two dozen humans
are attacked each year.

There are some really
dangerous things here.

The creatures I'm looking for
are masters of blending in with their environment...

and will see you
long before you will see them.

It's nearly impossible
to know where the dangers are.

At any moment,
something you don't see

can lunge out and attack you.

I'm in shallow water here,
at depths of almost 50 feet.

But even here,
lethal creatures can hide.

Wow.

Whoo!

That was amazing.
We saw an octopus.

And then we saw
a lot of rays

swimming around down there,
right?Yeah, a lot of rays.

And the big black ones.
And they just fly underwater.

They're just so magical. I love how they move.
Yeah, they really are.

I think knowledge is really
the key to protecting yourself.

The little, tiny,
no-bigger-than-your-thumb octopus

that'll just kill you
if it bites you-- that could just be under the rock?

You have to be careful
of the smaller,

more potently venomous things.

I've only dived close to shore,

but I'm amazed by how many mysterious predators I've seen.

What would I find
in deeper waters,

like Australia's southern ocean, where depths reach 20,000 feet?

Is it possible the monsters
of our imagination

are hiding in the abyss?

Scientists believe
we know more about the surface of Mars

than we do about the deepest parts of our ocean.

Hidden from light
and over six miles down,

the depths of our oceans
are a truly wild frontier

with unknown beasts
roaming free.

Could these be the monsters
depicted in legends?

To find out, I'm meeting
with biologist Dianne Bray,

who analyzes marine specimens
recovered thousands of feet down

off the coast of Australia.

I'm interested in
some of the more unusual

or scary-looking things
that you have in your collection.

People call these things scary.
I call them awesome.

Yeah, sure. Fascinating.I just think that--

Deep sea fishes in particular,
I just think are awesome.

One of the really cool things
that we did find last year was a faceless fish.

[water dripping]

It's just really weird.

They apparently do have eyes,
but they're buried deep within the head.

I thought that
those were his eyes.Yeah, you'd think they were,

but they're nostrils.

It is so fascinating
to see an animal

that doesn't have any kind
of discernible eyes, actually.

Living down at 4,000 meters,
this is one of

the largest animals
that would be down there.

It's a really harsh environment.

And, presumably, it relies on scent to find food.

One of the other groups
of deep-sea fishes

that I find are just amazing
are the deep-sea anglerfishes.

So this is what we call
a "football angler."

She has this big lure
on top of her head

that looks like a squid
to attract prey.

What would be
the predator of a squid, which then she would--

And look at those teeth.

If you can see,
she's actually eaten a squid.

Ooh.

What's in this one?
Am I gonna be freaked out?

It's 70% ethanol.
You might be freaked out by the smell.

Ooh!

One of the sharks
that I really,

really, really like
are these goblin sharks.

Oh, my God.

They've got these really fine
grabbing teeth to swallow things.

They can't cut them up,
so they have to sort of keep grabbing

to get them to go down
their gullet.Right. Right.

[Quinto]
There's so much that we may never know.

What's down there,
you know,

how the environments change
the deeper you go,

and how animals
and species interact with one another.

It feels like a true abyss.

People laugh at me or look at me
when I say this,

but the greatest migration
on the planet happens every day in the ocean.

There's a whole suite of animals that move from depth

to feeding upper layers at night. Right. Right.

And they gotta get down depth when the sun comes up,

because they've got to hide their silhouette somehow.

There's nowhere to hide in the open ocean. Right.

[Quinto]
Is it possible this great migration of deep-sea monsters

played a role in the attack
suffered by 17-year-old Sam Kanizay?

And could it be
the key factor to explain why flesh-eating amphipods

swarmed him at night
in the shallow waters?

How are you, man?
So nice to meet you.Good, mate.

In the aftermath of his attack,

Sam's father, Jarrod,
tried capturing some of the amphipods

to analyze their behavior.

The nurses and doctors
weren't gonna jump in the ocean

and try to find out
what these things were.

So I figured,
why not try to reenact the case 24 hours later?

That night, he went back
to the same spot

where Sam stood in the surf.

He used raw meat as bait.

And after only 15 minutes,

he captured hundreds
of flesh-eating amphipods.

Oh, man! No, dude! No![muttering]

[laughing] No!When I first put them
in the dish,

they just tried to search for the meat, right.

And some were already clinged on.

And this was within seconds.

So it was pretty exciting
to watch them go for it.

You can see that some of them
are right into it, chowing down.

But there was not one swimming around in the morning.

They were all clung on to the meat.

That's gnarly.So we figured that we
were onto something.

Yeah, I'd say so.

And where is this right now?

This is on
your kitchen counter?

Just a-- Yeah. Yeah.[chuckling]

We didn't know whether
they were going to burrow into Sam's legs--

...or whether they had,
or whether they were going to leave infection.

Thank God you got out
when you got out, right?Yeah.

Like when you watch this,
I feel very queasy.

It's taking--They're moving so fast.

Sort of a bit like piranhas,
I guess. They way they--Yeah. They are like piranhas.

The way they devour the meat.

[Quinto]
Jared was able to obtain

a large sample of amphipods

after only a short period
of time in the water.

But I want to know if
we recreated Sam's incident on a larger scale,

could we solve the mystery surrounding what provoked them?

I've set up an experiment
to find out.

So you left the meat in
for about 15 minutes you said, right?

Yes.Well obviously, Sam,

we don't want to put you
in the water.

So we have a bit of a
representation of Sam.

So we have your legs, Sam.
And we have a cage.

And we're gonna put this
in the water overnight.

We're gonna come back
after 24 hours

and see what we come up with.

These creatures
rarely attack humans.

But I'm curious to find out
if several pounds of raw meat

will trigger
another feeding frenzy.

What might come up
from the depths?

Coming up... [Zachary Quinto]
I'm investigating the monsters

lurking in the depths off
the coast of Australia.

Like the unseen predators
who attacked 17-year-old, Sam Kanizay.

Hey, Sam.Hey, Zac.

Good to see you again.Yeah. Good to be back.

So we did our experiment
in the water last night

with the meat legs.

We know that these crustaceans
primary job is to feed on dead sea life.

And we didn't see a lot of
evidence of sea fleas

when we pulled it out today.Yeah.

I was speaking to the scientist
at Museums Victoria

and she threw out this tale
that has some credence among fisherman.

Which is that maybe
these amphipods

have some relationship to
the full moon.

She said that a lot of
fisherman cast their lures

on a full moon and the bait
is covered in amphipods.

Do you remember what the moon
was like that night?

Oh, I don't recall exactly.
But I--Right.

do, uh, remember a lot of people
saying, "Oh, could've been because of the full moon."

Oh, really? It does increase
the mystery of how your dad

was able to go back the next
day and get so many of them.

And here we gave them a feast
for an amphipod king

and it doesn't seem like we
brought anything up.

We may never know for sure
what caused the flesh-eating amphipods

to attack Sam that night.

However, his story is hardly
an isolated incident.

Strange sightings
involving even larger,

more frightening
aquatic monsters are on the rise.

And they've spread well beyond
the waters of Australia.

When you talk about
aquatic cryptids, they're distribution is global.

They're all over the place.
You know, they've been seen in lakes in Africa.

They've been seen up
the Mekong River in Vietnam, Laos, and Cambodia.

There is no limit
to where they can be found.

[Quinto]
In 2017, a 50-foot-long unknown sea creature

was discovered in the waters
off Indonesia.

Experts struggled to determine
what the organism was.

Witnesses reported
a mysterious oozing red fluid.

And that's just the beginning.

IN the United States
you have a host of them

and they stretch from California
all the way out to Maine.

[Quinto]
In 2008, the remains of an unidentified organism

were discovered on the shores
of Long Island.

The sighting went viral.

Social media christened it,

the Montauk Monster.

With prehistoric features that
seemed to combine creatures from land and sea.

[man]
What is it? Monster or mammal?

Animal or aberration?

[Quinto] In the wake of Hurricane Harvey in 2017,

a strange carcass washed up on
the shores of the Gulf Coasts.

It became known as
the Texas City Creature.

Where did these beasts
come from?

Why are so many surfacing now?

There's one place
that might be able to help unravel the mystery.

Nova Southeastern University
has been pulling strange fish

from America's coast
and beyond for decades.

[Quinto]
How are you? Nice to meet you.

How are you? Nice to meet you.Good. Nice to meet you.

[Quinto]
Dr. Tracey Sutton leads the team.

Two thirds of the planet
is covered in water.

But that's only the surface,
right?Right.

The ocean's much deeper
than people think.

So the average depth of
the ocean is 4,000 meters.

So that's several miles deep.
And human beings haven't actually explored

less than one percent.

Far less than one percent.Wow.

[Dr. Sutton]
We're still peering through the looking glass.

Every time we come up with a new technology to go down there

and look at things,
we see a brand-new world that was there all the time.

We just couldn't see it.

So this is our lab where
we bring in the samples

that we've collected from
the Gulf of Mexico, North Atlantic.

These things seem sort of
otherworldly, I feel like--

A lot of the things
that are down there kind of look nightmarish.

This is a cookie cutter shark.

They're called a cookie cutter
'cause it bites whales and large fishes.

It takes a scoop of flesh out.Really?

That's how it eats.

Put on a lab coat.
If you would.Okay.

This one's called a viperfish.
The teeth are so large.

It literally has to look
through its teeth

when its mouth are closed. Wow.

And those are so sharp.Wow.

So this is called a lancet fish.
The teeth are blade-like.

We think that the purpose of
this type of tooth is to come up

and whack the spinal column to immobilized the prey. Wow.

And then this can take its time swallowing.

So fascinating how, you know,

fish have such specialized
hunting skills.

There's no solid surfaces.

So there's no where
for anything to hide.Right.

So it's kind of
an arms race out there.

[Quinto]
In order to survive, every one

of these monsters appears to be a killing machine.

No matter how big or how small.

And with so little of
the deep ocean actually explored,

there could be millions
of terrifying fish we've never even seen before.

Lurking just offshore.

Today, Dr. Sutton
is doing an advanced DNA test

on an unknown sea creature.

One of the things we're working
on now is a brand-new fish

that we're pretty sure
is a new species.

It's a relative of
the dragon fishes.

You can see that
it has these large grasping teeth up in the front.

Maybe to hold prey.

[Quinto] Like many other fish
in Dr. Sutton's lab,

this unknown specimen
from the ocean's depths is a fierce

predator. It has a set of
grasping teeth

that continue all the way down
its throat.

Which allows it
to swallow its prey whole.

[Dr. Sutton]
If you look on the skin,

this fish actually has
thousands of photophoresWow.

all over its body
to match dim welling light. Yeah.

[Dr. Sutton]
So if you were to look up at a blue sky,

if your belly
is also blue light, you'll kind of disappear.

Oh, it's a kind of camouflage.In theory that's what--
Exactly right.

But you've never discovered this before? Right.

We're pretty sure
this is a new species.

So we want to validate this
genetically.

What we're gonna do now
is take a tissue sample.

We'll hand it
to our illustrious gene team.

Then that gets analyzed.

[Dr. Sutton] They will do a genetic analysis

to make absolutely sure

that there's not a single fish
anywhere in the world

that is this particular species.

I know nothing
about marine biology, so this kind of exploration

and this kind of depth
is something that is endlessly fascinating.

And I can't wait to see what
our DNA test results reveal.

But terrifying fish don't just
exist in Dr. Sutton's lab.

I've uncovered
surprising reports

of vicious predators
from around the world

flooding lakes and rivers
enjoyed by humans

only a few miles away,
right here in Florida.

Zak Bagby has been fishing
in Florida's freshwater lake since he was a kid.

Oh, whoa, whoa.

Whoa, whoa, whoa.That's a mouth.

That's a monster.Oh, my God. Oh, my God.

It's a giant. [Quinto]
In recent years,

he's noticed large
and mysterious fish

invading the waters of Florida.

It's a giant.It's an absolute giant.

Oh, my God. [Quinto] Could these monsters of the deep

be lurking in our own backyard?

He is pissed.

Oh, my God. We got him.

[thunderclap]

[Zachary Quinto]
I've been trying to determine

whether or not
monsters of the deep are real.

And what I've turned up

could be more terrifying
than I ever imagined.

No. Dude. No.
[chuckling]

I've seen sea creatures from
the deep that specialized in savage art of survival.

This tooth is to come up
and whack the spinal column

to immobilize the prey. Wow.

But deadly beasts
aren't just confined

to laboratories
and occasional viral videos.

There are countless monsters

living in the serene swamps
and rivers of Florida.

Prime swimming areas
for the 20 million inhabitants of this state.

[fishing line retracting]

[Zak Bagby]
You can feel when the bait gets nervous

on the end of the line if you
really know what you're doing.

A little bit of nervous,
then, bam.

Ooh. Something just jumped
right over there.

Oh!
Whoa, whoa, whoa.

Big fish.That's a monster.

It's a giant.That's an absolute giant.

Oh, my God.

Oh!Oh.

Oh, my God. We got him.We got him.

Oh, my God!That's such a beast.

Oh, my God!

Look at the size of this thing.

This is a monster.

[Quinto]
Angler Zak Bagby is seeing an invasion

in Florida lakes and canals
by the clown knife fish.

Originally from East Asia.

These exotic predators
are devouring

the local fish populations.

And they have even been
known to attack humans.

He's alarmed by the explosion
of these foreign species

and the dangers they oppose
to local swimming areas.

Oh, man.
His teeth are super sharp.

[Quinto]
And his catches keep getting bigger.

This is almost a three-foot-long
exotic clown knife fish.

One of the biggest
I've ever personally seen ever.

[Quinto]
Zak has become so obsessed by these invaders--

[Zak] Oh, my God. Oh, my God. ...he's taken to YouTube

to document
his monster catches.

Look at this.

And look at this.
Look at his head.

[Quinto] And his videos have gone viral.

[woman] Oh, wow.Look at the size of this fish.

This might be ten pounds.

[Quinto]
Why are so many of these

dangerous monsters showing up

in our lakes and rivers?

I'm meeting with Zak to get

to the bottom of
this phenomenon.

So have you noticed
an increase of exotic fish

over the last few years?There is a crazy increase

of exotic fish. Yes.Really?

There's monsters in here.

And I really
didn't even understand

that they were here like that.

But I fish in here,
year after year.

and I may catch one a week.

Next year,
oh, maybe two a week.

Now it's every single day,Wow.

I catch several clown knife
fish. Yes.Really?

So you can really see
year to yearYes.

the increase
of their population.Absolutely.

When they fish stick together

like most of these exotics do.

It just-- They just take over.They just overpopulate.

Yup. To see a fully grown
clown knife fish,

it's like heart stopping.
They look like aliens.

They have a tongue that
has teeth on it.Wow.

They swim backwards, forwards.

They roll, they breathe air.

They're really hard,
hard to kill.Wow.

But strange predator fish
are not just a problem in the freshwaters of Florida,

they're wreaking havoc
around the globe.

Killing off millions
of local fish.

First native to China,
Asian carp have invaded

rivers around the world
like a deadly plague.

[newsman]
In the Mississippi River system,

the fish has left
a trail of destruction.

[Quinto]
Originally from Africa,

snakeheads are now a menace

in lakes and rivers everywhere.

Locals call them "Frankenfish"

because they can live out
of water for up to four days.

Making them nearly impossible
to eradicate.

And walking catfish
first came from East Asia,

but now they haunt farmers
around the world

because they can walk across
dry land to devour crops.

With many new invaders
taking over

new aquatic areas
all over the world,

Zak Bagby is concerned about
an even more serious problem.

Any fish that you've come
across that are a danger to humans?

We do have things like pacu fish
that come into the canal system.

They have a jaw structure
that is just for pure power.

Shaped exactly like a piranha,

except they get to
be 50 and 60 pounds. Wow.

When they school up, I've seen
them act really aggressive.Wow.

Let's take a look
at these pacu fish.[laughs]

[Quinto]
To monitor the surge of these invaders,

Zak keeps samples of
the strange fish he catches.

And that is a big...

That is a big fish.
As you can see.

So what if you find yourself
in a hostile pacu environment?

What would happen?If you were inside a small pond
and these fish haven't eaten,

they're gonna take a chunk out
of you and swim away.

They're known as
the "nut-biters," not only for the trees and berries,

like if you know what
I'm saying. Yeah. Like honestly.All right.

So what, they have a reputation
for going after the junk?They have a reputation

for going after the junk.Really?

And going after the toes. Yes.Wow.

They're insane. If they are
super hungry, they will take a bite out of you.

That's not the bite
you want taken. No. No.

Uh, here's some raw meat.
Are you sure you don't want to try to feed them a little bit?

I mean, I'm really, really
intrigued by this experience.[laughs]

You go.Here we go. Come on.

Aw, yeah. Here you go.

Yeah. Stand back
so they don't splash you.

[laughs]

She got the whole thing.She got that whole thing, huh?

So we're gonna go ahead
and get this pacu into this massive net.

Oh, God. Relax. Relax, Flipper.

Flipper. Relax. Relax, Flipper.

[groans]
Oh, we wrapped him around.

One left.
[groans]Wow.

So, let's check out his teeth.

Can you see in that jaw?

[Quinto]
That is so crazy.

[Zachary Quinto]
Exploring the

has been an intense experience.

From the shallows
of Australia...

[gasps] ...to the darkest depths.

I've seen that
no matter their size,

these beasts
can inflict real damage.

Now, there's
a renegade species.

The pacu,
taking over lakes and streams

in Florida
at an incredible rate.

[Zak]
They have a jaw structure

shaped exactly like a piranha.

So, we're gonna go ahead
and get this pacu into this massive net.

Oh, God. Relax. Relax, Flipper.

Flipper. Relax. Relax, Flipper.

[groans]

Now how long can they
stay out of water?

They can stay out of the water
five minutes.

Oh, really?Yeah. They're really hardy fish.

So let's check out his teeth.

Can you see in that jaw?

Look at the teeth.Oh, my.
Looks like a human mouth.

Look at that. Look at that.That is so crazy.

These things are scary.

I mean it looks like
a human's set of teeth

inside of a fish's mouth.

We talked about how smart
they are when fisherman

are trying to lure them in.

Look at the nostrils
on that thing.

They can smell you
from a mile away.

This guy was in a space
that has hundreds of pacu fish.

[Quinto]
Wow.Insane.

If they get pissed, goodbye.
Nice knowing you.

So you would not want to go
swimming in that lake?No.

[scoffs]
I would never even think about it.

Right. Jeez.Yeah.

I've seen the environment
change living and growing up as a fisherman.

What I've seen
is just unimaginable.

They're thriving
and I'm starting to see them reproduce.

It doesn't make sense almost.
Yeah.That's crazy.

I love Zak's enthusiasm.

It's interesting to get
the perspective of someone

who's on the ground.
To kind of get to some of the stuff

that is unknown
and undiscovered.

It's alarming.

Even though I've seen bizarre
and dangerous sea creatures,

I'm still searching for proof
that legendary monsters of the deep really exist.

Back at Nova Southeastern
University's advanced DNA lab,

Dr. Tracey Sutton has
a monstrous new specimen that may offer some clues.

[Dr. Sutton]
One of the things that occasionally

comes to the surface
is a oarfish.

[Quinto]
Whoa.

They've been known to approach
40-feet long.Wow.

It has the appearance of
a sea serpent

and we think this might be
the inspiration for sea serpent legend.

At night these occasionally come
up into the shallow water.

You're out on a boat,
there's a bright blue ocean,

and then you see
a 36-foot-long red thing.

It certainly could look
like a sea serpent.

[Quinto]
Do you feel that people that tell stories about monsters

and these unidentified creatures
of the deep

are just really
seeing things that

aren't often seen
by human beings?

[Dr. Sutton]
I do believe that a lot of these legends are based on

somebody seeing something
that was not yet described.

I would say that there
is a high probability that there

is some large things
we have not seen yet.Uh-huh.

[Quinto]
Someone like Tracey who spends his life

seeing things that
are unknown all the time

has a pretty reliable
perspective of it all.

So maybe it's when these
different species interact with humans

that they become monstrous
and that allows us to explain them

in a way that
we can't otherwise.

Despite growing evidence of
undiscovered new species,

skeptics argue the term
"monster" is relative.

Back when these legends
and myths first started,

we didn't know
what these animals were.

They may have been encountered
in some capacity,

but not in the way that they've
been portrayed over the years.

Things get fantastical
over time. You know.

As one person tells another,
these creatures become more and more and more,

kind of, outlandish and weird.

The general public doesn't come
into contact with these animals.

So one man's sea creature
or sea serpent

is another man or woman's,
you know, known species.

[Quinto]
But 99% of the deep seas are unexplored.

And experts remain convinced
that undiscovered creatures are still out there.

We're still at the point
where every single sample could have something new.

[Quinto]
So I'm anxious to see what the results

of our advanced DNA experiment
will reveal

about the existence of
previously undiscovered fish.

Will we uncover a new species
of deep sea predator?

Results are in. [Quinto]
And if so,

what else could be out there
that we don't know about?

[Zachary Quinto] Myters of the deep

has taken me from
the shark-infested waters off Southern Australia...

My feet were covered in blood.A lot of blood?

...to the freshwaters
of Florida

right in our own backyards.

Look at that. Look at
the teeth on that thing.Wow.

I've seen evidence
that nightmarish species

of marine life do exist.

And although they may not
be mystical creatures

depicted in ancient legends,

the ones I've discovered
are real.

And they're more frightening
than I ever imagined.

It's just really weird.

They're thriving and I'm
starting to see them reproduce.

It doesn't make sense almost.That's crazy.

Now I'm working with
Dr. Tracey Sutton and his team...

We're still at the point
where every single sample could have something new.

[Quinto]
...to determine whether or not they've identified

a brand-new species of fish.

[Dr. Sutton]
So we want to validate this genetically.

Results are in.What are we looking at?

We're looking at your new fish
right down here.

And we're looking at
two individuals of a different species.

Okay.And you can see that there's
clear genetic differences

between your fish
and these other fish up here.

When the difference gets to be about two, three, four percent,

that's when it means
you might actually have a different species.

And we do?Yes. Absolutely.
It's about four, five percent.

All right.So you're just learning this
right now?

Well we had an inkling,
but now, this is, you know,

irrefutable evidence
that this is a unique fish.

So we'll take this fish,
probably send to Harvard

to a curated collection
that anybody in the world could look it up.

It kind of makes it a slam dunk,
if you will.Uh-huh.

[Quinto]
Today we learned more about what dwells in the deep,

but this single breakthrough
is just a tiny drop of water in the vast unknown oceans.

It's incredible that you're part
of discovering a new species

which is a significant event.

But if we're just discovering
one today, I mean,Right.

this must happen all the time,
right?

There's so much unexplored,
and so much unidentified,

uh, out there, that you're
really a part of uncovering.

Yes, and we think
that there's still a lot of

these large predators
that we haven't seen yet.

And they might be
much bigger than what we've been able to catch

with the gear
that we've been using.

Pretty shocking how much there
is to be discovered yet.

That's the scary part of it
I think and that

less than one percent
of the deep ocean has been explored.

The great oceans of the world
contain Earth's most enduring mysteries.

What kinds of undiscovered
species could still be out there?

Both in the deepest parts of
the sea

and in the murky shallows
closer to home.

I remain in this field
because, my gosh,

the pursuit of this
is extremely enthralling.

And the end result

if we do get a living, breathing
creature will be breathtaking.

[Quinto]
As new technology allows us to learn more about

what lurks beyond
the ocean's surface,

perhaps we'll find the origins
of real sea monster myths and legends...

If we dare.

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