All language subtitles for Ancient Aliens S08E07 Creatures Of The Deep

Narrator: Strange,
sharp-toothed predators.

David Wilcock:
Their genes don't match up

with anything else
that we have on Earth.

Narrator:
Multi-legged behemoths.

Loren Coleman: The kraken
scared humans for centuries.

Narrator: And ravenous reptiles
that prey on humans.

Ken Gerhardman: Children are
warned to stay away

from bodies of water
because the kappa will actually

drag them in and drown them.

Narrator:
Throughout history,

there are accounts of bizarre

and frightening creatures
inhabiting our waters.

Is it possible that they come
not from our lakes and oceans,

but from somewhere
far more remote?

Giorgio Tsoukalos:
Could it be possible

that some of that light
that we've discovered

at the bottom of the ocean
had its origin in outer space?

Narrator:
Since the dawn of civilization,

mankind has credited
its origins to gods

and other visitors
from the stars.

What if it were true?

Did extraterrestrial beings

really help
to shape our history?

And if so...

might they have come in the form
of creatures of the deep?

Narrator:
August 19, 2014.

During a routine cleaning,

Russian cosmonauts aboard
the International Space Station

discover something
incredibly unexpected

covering parts of the windows

living sea plankton.

According to
some mainstream scientists,

the tiny organisms may have been
carried to the station

on air currents
from the earth's oceans,

or perhaps launched into space
on a contaminated rocket.

But many say these are both
highly improbable scenarios.

In the previous episode
of cleaning,

which was only about a few weeks
prior to that particular date,

there was nothing found.

And the space station
was in orbit;

there was no connection
with the ground.

So I-I really think that there's
absolutely no chance

that these are
microorganisms that were

somehow lifted from the Earth.

Narrator: Astrobiologist
Chandra Wickramasinghe

believes the plankton is
of extraterrestrial origin,

and evidence of panspermia

the idea that life exists
throughout the universe

and is spread
by comets and asteroids.

WICKRAMASINGHE:
I think what happened

was that a small fragment
of a comet

that carried microorganisms, uh,

including plankton,
landed on the window

of the International
Space Station.

It's not surprising
if one accepts the idea

that life is continuing
to arrive

at the Earth from space.

Paul Davies: There's always been
a-a problem about life on Earth.

Did it actually
start here on Earth

or come here
from somewhere else?

Uh, seeing as we don't know
how life began,

it's up for grabs.

Narrator: But whether life
originated on Earth

or somewhere else
in the universe,

one thing is now certain:

sea plankton can survive
in outer space.

Surviving space is
very difficult, actually,

primarily because of the,
um, the vacuum of space

and then the intense radiation.

And so those things,
um, in general

will sort of rip apart tissues.

So the presence of-of plankton

on the space station,
um, is remarkable.

Narrator:
The discovery of plankton

on the International
Space Station

has led ancient astronaut
theorists

to ask the question:

If sea life can thrive in
the furthest reaches of space,

could the reverse
be true as well?

Might there be undiscovered
alien life-forms

dwelling in the deepest regions
of our oceans?

Portsmouth, England.

December 21, 1872.

The HMS Challenger sets out

on a three-year
scientific expedition

to survey the Earth's oceans
and search for new marine life.

At the time of its departure,

the mainstream
scientific viewpoint

is that life cannot exist
more than 1,800 feet

beneath the surface
of the ocean.

But in March of 1875,

after more than
two years at sea,

the crew of the HMS Challenger
makes a remarkable discovery.

Using a deep-sea dredge,

they uncover
an abundance of life

at depths well beyond
1,800 feet.

Every time they dredged
the waters of the ocean,

they kept bringing up
weirder and weirder creatures

at deeper and deeper levels.

And it quickly became apparent

that the oceans
are teeming with life.

Throughout time,
we tend to sort of, um,

impose our own limitations
and our own perspectives on,

sort of, our view
of the universe, right?

And so our idea of the deep
ocean was similar to that, too.

We thought that probably nothing
else could live at great depths

because we certainly
couldn't survive.

Um, our bodies
couldn't take the pressure.

It's sort of biased,
I think, our interpretation

of life in the deep oceans.

Wilcock: They found over 4,700
different types of new life.

It was a wealth of data
so vast that it filled

50 volumes with 30,000 pages
of information,

and was, essentially,

a scientific revolution
for its time.

Uh, 220-plus, uh, crew.

Only five scientists...

Narrator: In addition to finding
new species of marine life,

the Challenger crew
also made the first discovery

of what are called
cosmic spherules

nickel-iron micrometeorites
from outer space.

According to some scientists,
these spherules could be capable

of carrying
extraterrestrial life.

Davies:
A lot of those rocks

would have carried
a microbial cargo.

Cocooned inside of rocks,
a microbe could be quite happy

in the harsh conditions
of space.

In particular, it would be
shielded from radiation by

the depth of rock.

It could probably stay
in the dormant phase

out in space
for certainly thousands

if not millions of years.

Henry: When scientists explored
these nickel-iron spherules

in depth, they discovered
that they contained iron

that was extraterrestrial
in origin.

Is it possible that this
extraterrestrial substances

were brought here
by alien beings and deposited

in the oceans of Earth,
along with other forms of life?

Narrator: Is it possible
that the Challenger

discovered the conveyance

of extraterrestrial life
on the sea floor?

Might the deepest parts
of the ocean be as alien to us

as the farthest reaches
of outer space?

Ancient astronaut theorists
believe the answer

is a resounding yes,

and point to other
strange creatures

that have recently been found

in the seemingly
inhospitable deep.

March, 2005.

Scientists off the coast
of Easter Island

discover the yeti crab,

a furry crustacean that thrives
on the sea floor

near hydrothermal vents

fissures that release
geothermally-heated water.

Using the hair
that covers its body,

the crab is able to filter out

the toxic minerals
the vents excrete.

But as extraordinary
as the yeti crab is,

it is just one of many forms
of marine life

known to be able to exist
in such extreme conditions.

Because of the unique conditions
that exists

in the hydrothermal vents, um,
some really interesting

and remarkable organisms
can be found there.

Narrator: Another
newly-discovered organism

that puzzles scientists is
the ctenophore, or comb jelly.

When neurobiologist Leonid Moroz
sequenced the DNA

of this translucent creature

at the University of Florida
in 2007, he discovered

they possessed
a complex nervous system

completely different
from the entire animal kingdom.

Narrator:
How comb jellies function

continues to baffle scientists,

and their unique properties
have led Dr. Moroz to dub them,

quote, "aliens of the sea."

We're still finding incredible
creatures in the ocean,

creatures that we never
even knew existed.

Could be extraterrestrial life.

It's a big planet, and there are
a lot of mysteries still here.

Narrator:
Could there really be alien life

thriving in Earth's oceans?

Might they have traveled here
on meteors,

like the plankton found aboard
the International Space Station?

Perhaps further clues
can be found

by examining the legends
of strange aquatic creatures

that were said to have
come to Earth from the stars.

Narrator:
Miyazaki Prefecture, Japan.

May, 2014.

At the historic
Miyakonojo Shimazu Residence,

the mummified remains
of a sea animal

with webbed hands and feet
are put on public display.

Discovered in 1818,

the bones are the first
of their kind to be exhibited,

and are purported to be
from the legendary kappa

a species
of amphibious humanoid creatures

believed to lurk
in the waters of Japan.

DOMINIC STEAVU: These remains
were from, allegedly,

a kappa that had been shot
in 1818 near a local river.

The kappa, which translates
as "water child,"

is a creature that is usually
about five feet in height,

has scaly skin,

and is usually blue
or green in color.

It has a turtle shell
on its back and a beak,

as well as a kind of plate
on the top of its head

in which it always
has to carry water.

If it spills this water,
then it loses all of its power,

and it can die within
a very short period of time.

So the kappa is basically
a water demon.

Gerhard:
The kappa is perceived to be

a very malevolent
and quite violent creature.

And, in fact,

children are warned to stay away
from bodies of water,

because the kappa will actually
drag them in and drown them.

Narrator: While accounts of the
kappa are rare in modern times,

there are still sightings

in remote areas
like the Fukuoka Prefecture.

In fact, to this day,

signs can be found posted
near bodies of water

throughout Japan
warning of the kappa.

For ancient astronaut theorists,
the kappa are not only real,

but their existence is proof
of otherworldly beings

inhabiting the Earth's waters.

Wilcock:
These kappa are reported

as having
an unusual intelligence.

Apparently, they can speak,

even though
they have a bird-like beak.

And now,
physical, tangible artifacts

of the body of the kappa
have gone on display.

Will we find genetic markers

that clearly show that it could
not be something from Earth?

Narrator: Could it be
that the kappa are similar

to the other strange
undersea creatures

first discovered by
the HMS Challenger in the 1870s?

And if so, are they indigenous
to planet Earth,

or did they come here
by some extraterrestrial means?

Perhaps the answer can be found

by examining
the many historical accounts

of mermaids.

The very earliest accounts

of mermaid-like creatures
reveal a connection

with beings
that come from the sky.

A story from ancient Syria
that dates back to 1,000 B.C.

relates that the goddess
Atargatis came down from the sky

and dove into a lake

to become a half-fish,
half-human creature.

And in Greek mythology,
the goddess Aphrodite

is sometimes associated
with mermaid-like beings.

Loren Coleman:
If you look at

some of the ancient
classic authors

from the Greeks,
from the Sumerians,

you see tales of mermaids
in which

there is a very direct
connection with the heavens,

with a fish-like creature
that comes from outer space.

There's something out there
that may not even be connected

to our known biological world.

Narrator:
For ancient astronaut theorists,

the strongest evidence

that humanoid sea creatures
not only existed

but came from somewhere
beyond our Earth

can be found in the origin tale

of yet another aquatic creature
with human traits.

The West African Dogons
worship ancestral spirits

they call the Nommo

the first living creatures
created by their sky god Amma.

Described as amphibious,

hermaphroditic,
fish-like creatures,

they descended from the stars

in a vessel accompanied
by fire and thunder.

Giorgio Tsoukalos: There's
a really incredible story

of the Nommo
that descended from the sky

in a loud noisy whirlwind

that made the Earth shake
when it landed.

And their knowledge of
everything was given to them

by that being that descended
in a whirlwind from the sky.

Henry:
Now, this is interesting because

we have so many traditions
of extraterrestrial beings

riding upon clouds
that you have to ask,

did the Nommo
come from the stars?

Were they
extraterrestrial beings

that came to Earth
to teach the Dogon?

Is this perhaps why
they called them

the monitors and the teachers?

Wilcock: The legend said
they described the star Sirius

as being their point of origin,

and had
very accurate information

about a dwarf star
called Sirius B

that wasn't even known
at the time.

The Dogon said that when
the Nommo landed and came out

of this craft
that they arrived in,

they almost immediately
got into the water.

Because they were essentially
fish-like humanoids,

it seems that they needed
to be in the water.

We are definitely dealing
with some sort of intelligent,

aquatic, humanoid species

that came here
as an extraterrestrial visitor

from outer space.

Narrator: Might the detailed
descriptions of the Nommo

suggest that they were
extraterrestrials

that came from space
to inhabit our oceans?

And might these be
the same beings

that are described
in the accounts

of the kappa and mermaids?

Ancient astronaut theorists
say yes,

and suggest there is evidence
that alien life forms

have not only descended to Earth
from the sky,

but that they may also be
entering our planet

through underwater portals.

Narrator:
Lake Champlain.

July 5, 1977.

While taking a drive
along the Eastern shore,

just north
of St. Albans, Vermont,

Sandra and Anthony Mansi
pull over

to let their two children
play in the lake.

As they begin to wade in,

Sandra notices
a disturbance in the water.

And then, something shocking.

And I'm watching out there,

and all of a sudden,
I could see turbulence.

Something broke
the surface of the water.

And it broke the surface
like this,

right here the back of
the head and the neck.

I went down,

and that's when it turned
to look over its back.

And I snapped the photograph.

Narrator: The photograph
that Sandra Mansi took that day

is considered by many
to be definitive evidence

that Lake Champlain is home
to a monster.

Lake Champlain is named
for the French explorer

Samuel De Champlain,
and in 1609,

he claimed that
he saw a strange creature

emerging from the waters
while on an expedition.

This sighting was just the first
of hundreds.

And for many who believe
the stories are true,

Sandra Mansi's photograph
is the ultimate proof

that Champ really exists.

In 1981,

the famous photo
was submitted for authentication

to the Optical Sciences Center
at the University of Arizona.

The findings from
the optical college in Arizona

was that this was
an authentic photograph.

It was not tampered.

It was genuine.

Narrator: Curiously,
there have been sightings

of very similar creatures
reported all over the world,

like Cressie and Ogopogo
in Canada;

the Japanese sea monster Issie;

Mokele-mbembe, sighted off
the West Coast of Africa;

and the Loch Ness Monster
in Scotland.

Ken Gerhard: One of the most
compelling aspects

of the mystery is that
descriptions are very similar.

And we're talking about
decades of sightings,

numbering in the thousands.

To me, this indicates
that we're dealing with

variations of the exact same
species here

a breeding population worldwide.

Narrator: Could the fact that
stories of similar sea monsters

are told throughout the world
be evidence

that these strange creatures
really exist?

And if so, just what are they?

According to ancient astronaut
theorists, there is evidence

that they may have
extraterrestrial origins.

Henry: The story
of the Loch Ness Monster

reminds me of a UFO sighting

that happened north of Nashville
back in the '90s.

(rain pattering)

A man hears the sound of rain
beating down on the roof,

and he goes outside, and it's
a perfectly clear night.

And he looks up in the sky,
and he sees a giant UFO

that's firing at a creature
on his deck that looks like...

He calls it the one-footed
snorkel monster,

because it looked like an
elephant's trunk with one foot.

In his police report,
the man described

how the snorkel monster
spun itself into a vortex

or a ball of light
and disappeared.

One wonders if this is
evidence of a portal

that this creature
was opening up,

and, in fact, if this creature
and the Loch Ness Monster

are part of the same family
of creatures

that travel the world through
these portals or gateways.

Narrator: Could it be
that there are alien life-forms

inhabiting our oceans
that have traveled here

through portals
in time and space?

Ancient astronaut theorists
say yes,

and suggest further proof
can be found

with the story of another
underwater monster:

the kraken.

This squid-like creature
of enormous proportions

was described in 1755

by Norwegian historian
and bishop Erik Pontoppidan.

He included it
in not a fictional text,

but in an encyclopedic account

of the diverse life-forms
in his home country

called The Natural
History of Norway.

This is very compelling
because it indicates

that the kraKen was viewed as
a real and very viable animal.

In Norse mythology,
the kraKen was

an island-sized,
multi-tentacled monster,

capable of sinking ships
by way of the massive whirlpools

that it left in its wake.

Many of the ancient
classic authors

talked about kraken
as really being

the object that was
in the middle of a whirlpool,

so they saw the kraken
as a shipping danger.

Narrator:
Norwegian accounts of the kraken

creating whirlpools through
which ships would disappear

date back to the 13th century.

But could the truth
about these sea monsters

be even more incredible
than our ancestors believed?

Do the stories of the kraken,

and the mysterious whirlpools
it creates,

provide further evidence
of alien entities

coming to Earth
through underwater portals?

These legends suggest
that there is

a highly intelligent species
in the ocean.

We don't even really know
where they came from.

Perhaps our definition
of extraterrestrial life

is a little too strict.

And it could be
that these are species

that came here
from somewhere else.

Of course,
there's a lot of the ocean

that hasn't actually
been, uh, well explored,

so we're constantly finding
new and exciting creatures

that maybe before may have
only been legendary.

Narrator: Could there be
alien life inhabiting our seas

that is much larger,
more intelligent,

and more dangerous than furry
crabs and strange jellyfish?

And is it possible
that the Earth's waters

contain portals
that allow these creatures

to travel here from other parts
of the universe undetected?

To find out, ancient astronaut
theorist David Childress

will dive into the waters
of Mexico's Yucatan Peninsula,

where according
to ancient legends,

there is an underwater gateway
to another realm.

Narrator:
Tulum, Mexico.

Here, on the eastern edge
of the Yucatan Peninsula,

lie the ruins of one of the last
cities built by the Maya,

an advanced ancient civilization

that thrived
throughout Mesoamerica

from the eighth century B.C.
to the 15th century A.D.

Situated on a cliff
overlooking the Caribbean Sea,

this site honors
the mysterious diving god

that can be found depicted
on several buildings.

Behind me is
the Temple of the Diving God.

On the western doorway
is a stucco relief

of a winged being who is either
diving down from the sky

or he's diving down
into the water.

His real identity is not known.

Narrator:
In addition to the diving god,

it has been documented
that the interior of the temple

once contained a mural

portraying the Aztec
water goddess Chalchiuhtlicue.

While the Aztecs did not occupy
the Yucatan Peninsula,

their ancestors the Olmecs did,

and some believe there may be
a profound connection

between this area of Mexico
and the Aztec water gods,

who ruled over a paradise-like
world called Tlalocan.

Descriptions of Tlalocan
come from the Aztec shamans,

spiritual guides who could
access this otherworldly realm

through whirlpools
while in a dream state.

And according to
ancient astronaut theorists,

deep in the jungle,
just south of Tulum,

is a location
that is a perfect match

for the descriptions
of the east region of Tlalocan.

There's an intriguing site
right here

off the coast
of the Caribbean Sea,

and it may have a connection
to the Aztec Tlalocan,

and it's name
is Cenote Angelita,

and it's right here.

Narrator:
A cenote is a sinkhole

where limestone bedrock
has collapsed,

exposing the freshwater
underneath it.

Many of the cenotes
in this part of the Yucatan

are believed to have been formed
by the meteor strike

that wiped out the dinosaurs
more than 65 million years ago.

As a result
of this extreme impact,

they contain high amounts
of shocked quartz.

Shocked quartz is
a particular type of quartz

that really needs very,
very high pressure to form.

Quartz is a crystal,

but every crystal
is not completely uniform.

It's comprised
of smaller little pieces

that have to align
along defects.

And high pressure

changes the internal structure
of the quartz.

Narrator: Scientists have long
known that quartz is able

to convert the Earth's natural
electrical vibrations

into a form of energy.

And some have even suggested

that it could be used
in the formation of wormholes,

through an electromagnetic
reaction

called the Casimir effect.

Michael Dennin: The idea is,
if I take two metal plates

and stick them
in the vacuum of space,

it turns out, because
of quantum fluctuation,

this creates an effective,
attractive force

between the plates.

One can think of this
as a negative energy.

Now, an intriguing idea
that we get

is that this is exactly
the principle we need

to understand perhaps
how to stabilize a wormhole.

Narrator: Although there are
a number of cenotes

in the Yucatan,
Cenote Angelita is very unique.

About 100 feet
below its surface,

the freshwater meets up

with the salt water coming
from the ocean beneath it,

creating a mysterious
underwater river.

Childress: Where we are
right now in the Yucatan

is just about as far east
as you can go in Mexico.

And the description of Tlalocan
was that the very eastern side

was where the waters
of the underworld

met with the waters
of the surface world.

And that is exactly
what we have here.

It was said that souls
passed through here,

and the Aztecs believed
very strongly

that this was a portal
to another dimension.

Wilcock: The Aztecs had
the legend of the Tlalocan

they entered into through
whirlpools in the water.

So you can start
to connect the dots here

and see that those areas could
in fact be traversable wormholes

that will take us
somewhere else.

Narrator: Could the highly
pressurized quartz

found in Cenote Angelita have
made it the perfect location

for advanced alien beings
to create a wormhole?

And might this explain the
stories from the Aztec shamans

who claimed they were shown
an entrance to paradise?

David Childress has enlisted
diver Spencer Stander

to help him explore the cenote.

We'll see the-the river,
um, around an island.

And, uh, you'll see
these bizarre trees.

It's like a decrepit forest;
it's so cool.

It looks like a moving river.
You're gonna be blown away.

Uh, this is gonna be unique.

Narrator: Just south of Tulum,
Mexico, diver Spencer Stander

and ancient astronaut theorist
David Childress

are about to explore
the Cenote Angelita.

For ancient astronaut theorists,

Cenote Angelita has
an eerie similarity

to both the legends
and illustrations

of the Aztec paradise Tlalocan,
where it was believed

souls could pass through
a portal to another realm.

So, um, we're just gonna check.

(gas hisses)

All right,
I'm gonna jump in there.

Nice.

Narrator: Although
the waters of the cenote

are extremely murky
on the surface,

at 15 feet down, everything
becomes crystal clear.

But once they descend
to 100 feet,

it turns as black
as the darkest reaches of space.

Childress: And even though
we had lights with us,

it was still like we were
floating within the cosmos.

But then as we got down
at a hundred feet,

suddenly we could start to see
the sides of the cenote...

...and then this strange layer
began to emerge.

Narrator: Here, the freshwater
of the cenote meets

the salt water of the ocean,

forming one of nature's most
mysterious anomalies:

an underwater river.

Childress: And these dead trees
coming out of the sides,

and-and this artificial
sort of mound at the bottom.

And it was really like
the meeting of-of two worlds.

One of the freshwater
of the upper world

and then that of this
lower world of the seawater

and this murky layer
of hydrogen sulfite

that we had to then penetrate.

Narrator: The meeting
of waters from above

with waters from below

is exactly
how the Aztecs described

the east region of Tlalocan,

a place where souls would pass
from one dimension to another

as though passing
through a portal.

It is here that some ancient
astronaut theorists believe

there may really exist
a portal to another world.

Could it be true?

Might extraterrestrials
have considered this

the perfect location
to create a stargate...

...hidden in the thick layer
of poisonous hydrogen sulfide

that obscures
all that lies beneath from view?

The whole thing
was-was very spooky.

And, uh,
it's something I'll remember

for the rest of my life.

Narrator:
After 30 minutes underwater,

David and Spencer
return to the surface.

Childress: Oh, man, that was
so fantastic and strange.

-Man, uh, wow.
-(laughs)

It strikes me just how much
this does fit the Aztec legend

of the-the underworld
of Tlalocan.

What is mysterious though is,
even if the Aztecs

had come here
and knew about this place

or-or learned about it
from the Olmecs,

how would they have known

what is 100 feet down
in this cenote?

That's right, 'cause you can't
see it from the surface.

I mean, I suppose that,
you know,

the shamans could just go down
there in a... in a trance state

or if someone actually
dove down into this thing.

-Yeah.
-It's incredible.

Narrator:
Could it be

that some of the bizarre
underwater creatures

that have been reported
for centuries

like the Loch Ness Monster,

the kraKen and the kappa

are not just
mythical sea monsters,

but alien entities that have
come to Earth through wormholes?

Childress:
You have to ask yourself,

could the shocked quartz
here at the Cenote Angelita

create wormholes

that extraterrestrials
might have used

for interdimensional travel?

Jason Martell:
It can't be a coincidence

that both Mayan
and Aztec beliefs

incorporated
a swirling pool of water

where they were able to travel
to some other sacred paradise.

Maybe we're talking about
a form of technological travel

that isn't understood
in modern form,

but through
the ancient astronaut lens,

we have to understand
that ancient man

went to great lengths
to depict and explain

how this form of travel
was taking place.

And it might be
that this is something

that was extraterrestrial
in nature.

Narrator:
Could there really be

a gateway to another world

hidden at the bottom
of Cenote Angelita?

And if so,
could other cenotes, lakes,

rivers and oceans
contain similar portals

through which
all manner of alien life

is coming to our planet?

Ancient astronaut theorists
say yes,

and suggest
there is new evidence

that the abundance of water
on planet Earth

makes it a prime destination
for extraterrestrial beings.

Narrator:
August 30, 2012.

NASA launches Storm Probes
into the Van Allen belts,

intense radiation zones

that surround planet Earth
like a doughnut.

Dennin:
Because of the Van Allen belts,

incoming charged particles
are sent on curved paths

that safely protect the Earth,
and we don't get hit by them.

Narrator:
During the two-year mission,

the probes record
the belts' radio waves

and discover
something incredible.

(high-pitched warbling)

The sound they produce in space

is nearly identical
to the song of a humpback whale.

(whale singing)

Dennin: What's nice
about the Van Allen belts

is the radio waves they emit

are at the same frequencies
as sound that we listen to.

And so you can record
these radio waves

and play them,
and they make music basically.

(high-pitched warbling)

Radiation and things
in the universe make noise.

Planets emit a sound.

Everything emits a sound.

And the similarity
to the humpback whale sound

I mean, is that a coincidence?

I don't believe in coincidences.

But it is weird.

Wilcock:
It's possible to me

that other aquatic, humanoid
life-forms that are out there

in the universe
might be able to notice

that these electromagnetic belts
around our Earth

are ringing like a gong,
saying, "There's water here."

And that could
very well attract them

and draw them to our planet,

almost like a beacon
to a watery world.

Narrator:
Could the Van Allen belts

actually be
of extraterrestrial design,

acting as a beacon to indicate

that our planet
is rich with water?

While scientists are discovering

that water is more prevalent
throughout the universe

than previously thought,
it has become increasingly clear

that planets with large bodies
of liquid water

believed to be essential
for complex life

are scarce.

Earth is a little bit special.

It's got abundant water,
but it's also got abundant land,

and that may be
a peculiar feature.

But seeing as liquid water is so
critical to life as we know it,

when we look
to worlds elsewhere,

we're primarily looking
for liquid water.

If life exists
that's intelligent

on a planet that hosts
water-based life,

then one can suggest
that the only other planet

that they would be looking
for intelligent life

is also water-based.

Gerhard: We seem so fixated on
finding life on other planets,

yet there's so much potential
here on Earth.

If there's anything that
we've learned from history,

it's that anything is possible.

We can't discount
the possibility

that somewhere in the vast,
unexplored ocean depths

lies some highly intelligent

and highly dangerous life-form
we haven't seen yet

deep-sea aliens, if you will.

75% of our planet is ocean.

Martell:
Today, as we look deeper

into our own solar system
and beyond,

we realize
the importance of H2O,

and that water isn't only
a life force for us,

but possibly other organisms
within the galaxy.

And knowing that our oceans
are as deep as they are,

it's very possible
that there's a whole other world

of exploration waiting for us.

We might even discover
that there are other races

living on the planet Earth,

but at the deep parts
of our oceans.

Narrator: Is it possible
that extraterrestrials

inhabit our waters
all over the world?

Could exotic fish,

terrifying sea monsters,

and even humanoid creatures

have come to our planet
through underwater portals?

Perhaps when we finally make
contact with alien beings,

it will not be in
the furthest reaches of space,

but right here on Earth,

lurking in the deep.

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