Original subtitles

Palau.

A remote and tiny island chain near the equator

is home to one of the world's richest reef ecosystems.

It is also home to giants.

Massive Second World War wrecks

harbor dark secrets on the ocean floor.

I turn around,

there's a huge monster wreck behind me.

My heart went whoomp.

Undersea trenches,

deep enough to swallow mountains

offer a glimpse into the abyss.

The old phrase that

"we know more about the surface of the moon and Mars

than we know about the bottom of the ocean" holds true.

And large and mysterious creatures

soar through its azure waters.

You turn around and all you see

is these big, gaping mouths coming out of the blue.

It's basically like a mouth with wings on it coming at you.

Here, in this land of the giants.

(♪♪♪)

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At the southern end of the Palau islands

near a dive site called German Channel,

manta researcher Mandy Etpison

prepares to descend into the blue.

(♪♪♪)

During the German occupation of Palau,

prior to the First World War

miners blasted and dredged a channel here

to create a shipping route between the islands.

Today, strong currents carry plankton

to the mouth of the channel, making it an ideal feeding site

for one of the ocean's most graceful and gentle giants.

The manta ray.

One of the largest creatures in the sea survives by feeding

almost entirely on one of the smallest.

It's sort of like a bottleneck

so the plankton gets concentrated here

and that's why it's famous for mantas.

So we're hoping to see mantas obviously

and, if we're lucky, maybe a new individual

that hasn't been recorded yet

so we can add it to our database.

Mandy began the Palau Manta ID Project

in 2009.

Identifying each animal by the spots on its belly.

The spot formation on a manta is as unique as a fingerprint.

We started taking pictures of the bellies

to identify the mantas and trying to show,

especially Palau government,

that we don't need to hurt the animals

or tag them to be able to find out more about them.

We've identified over 280 right now.

Five years ago, nobody would have believed

we have that many mantas in Palau.

This simple ID project can do a lot.

By tracking the numbers and movements of mantas,

Mandy and the UK based Manta Trust

can identify any population decline

caused by illegal fishing,

and whether or not tourism may be driving mantas away

from German Channel.

Tourism is on the rise in Palau,

a collection of more than 200 islands

nearly 1,000 miles east of the Philippines

in the Western Pacific ocean.

The tourists that flock here to explore its natural wonders

contribute about $125 million to the economy,

more than half of Palau's gross domestic product.

Hundreds of miles of sky-blue ocean

surround the archipelago.

Limestone islands,

blanketed in thick and pristine jungle

rise like mushrooms from the sea.

They appear to be floating gardens.

Scuba divers from across the globe

are drawn to Palau

for what lies beneath the emerald lagoons:

One of the world's richest reef ecosystems.

These coral gardens overflow with 1,500 species of fish,

500 species of coral,

and more than 100 species of sharks and rays.

Palau's seas may contain more species of marine life

than anywhere else on earth

and provide researchers an exceptional window

into a vanishing underwater world.

The explosion of marine life here

is due to marine geology.

Palau sits on the tip of an underwater mountain

that formed 70 million years ago.

Far below the island peaks

currents crash against the drowned mountain

then surge upward, carrying the nutrients

that underpin the oceanic food chain.

There is another reason for the sheer numbers of fish

that throng these waters.

Palau has a long history of conservation.

For centuries, Palauans have lived in harmony

with the sea,

never taking more than they needed.

In 2009,

Palau created the world's first shark sanctuary,

making it illegal to catch sharks in its seas.

Then in 2014, it expanded its conservation efforts

and banned all foreign fishing within its waters.

Palau is now home to the world's largest marine sanctuary,

a swath of protected ocean nearly the size of California.

Marine-law officers patrol the Palauan seas

on the lookout for illegal fishing vessels.

As a result, the big fish that have been all

but wiped out in some areas of the Pacific

are still very much alive in Palau.

(♪♪♪)

Hefty grey reef sharks.

Five-foot-long Napolean wrasses.

And of course, manta rays:

The marine giants that patrol these seas.

Though smaller than their oceanic cousins

reef mantas are still among the largest fish in the sea.

They have an average wing span of 11 feet

and reach weights of more than 3,000 pounds.

Mantas have exceptionally large brains

specifically the region responsible for hearing, touch

and vision.

They are highly social and curious about humans.

If you've been diving a long time

you interact with different animals.

You can see the difference, for instance,

between a guppy or a Napoleon wrasse.

The Napoleon wrasse,

you can tell there's somebody home.

There's an intelligent being in there

and it's the same with mantas.

When you look at them and you start realizing

they're actually, in my opinion

they can recognize certain dive guides.

They will go over a dive group

and go straight for the dive guide,

and especially the newborn mantas

they will play with divers when it's not too crowded.

You can see it's an intelligent animal

like a dog or a cat and they can learn.

At German Channel, mantas swim against the current

to feed on large concentrations of plankton

swept into the channel entrance.

Fins curving around its face direct water

into the manta's large, open mouth.

You turn around and all you see is these big, gaping mouths

coming out of the blue.

It's basically like a mouth with wings on it coming at you.

It's an amazing sight.

Tissue between the manta's gills

sift tiny crustaceans and plankton from the water.

A manta is like a giant filtering machine,

capable of vacuuming up more than 400 pounds of plankton

in a single week.

At times, manta feeding can be a dizzying display.

Depending on the current and the wind direction,

sometimes they'll feed by themselves and roll.

They call it "barrel rolling".

It's like an underwater ballet.

Really nice to watch.

The manta may look like it's chasing its tail

but by rolling, it pushes more plankton

into its waiting mouth.

When the current is strong usually right before a full moon

mantas adopt an entirely different

but equally captivating feeding strategy

known as "train feeding".

So you can get anywhere from 2 to 20 or 200

if there are that many, feeding together in a train,

which is an amazing sight.

They'll just keep going back and forth across the line

where the plankton gets trapped.

(♪♪♪)

One of the largest creatures in the sea,

mantas are also one of the most mysterious.

Research into their mating and birthing behavior

has barely begun.

For hundreds of years, mantas were simply known

as "Devil Fish" due to their imposing size

and bat-like appearance.

But they're very, very gentle

like when the current's strong sometimes

and you're taking photos or video

it's very hard to stay out of their way,

especially when there's that many of them.

So when you're free diving you dive down to take a picture,

they'll come straight at you,

and sometimes you get thrown in their path basically.

And they'll just very gently lift their wing

and try not to touch you.

They're very careful with people, which is amazing.

They could just slap you, you know, if they wanted to.

Mandy believes that physically tagging mantas

can cause harm to these gentle giants.

A manta's skin is like rubber

and wounds can take years to heal.

Even though they might be able to recover from it,

it leaves scars.

And by photographing the mantas at German Channel

we've seen how long it can take for those scars to heal.

By photographing them every season

you can start seeing those results.

So we prefer to not do actual tagging.

Previous tagging studies enabled scientists

to track the movement of mantas.

Photo IDs can't do that,

but Mandy has developed an alternative

that is unveiling more secrets of their behavior.

She places time-lapse cameras at the cleaning stations,

spots on the reef where small fish rid the mantas

of dead skin and parasites.

It takes pictures every 10 seconds or 30 seconds

and normally we put four or five around a cleaning station

and then when you pick it up

you've got thousands of pictures to go through.

(Camera clicks)

In the previous year,

Mandy was able to identify 44 new mantas

from thousands of time-lapse photos.

It's a lot of effort, but worth it in the end.

Because instead of acoustic tagging

where you can just see a beep

how many times a manta passed by,

you can actually see the manta, what they're doing

and learn about their behavior at the same time

without hurting them.

Mantas are curious creatures

and will closely inspect the cameras

left behind on the reef.

When we put the time-lapse cameras

we start realizing that they're immediately aware

of something changing in their cleaning station

so they come up to the cameras

and they unfold their cephalic flaps

which are sort of like feelers for them also.

So they're doing like this to the camera

to see like what is this thing

that's sitting on my cleaning station.

So those are the kind of things

you would never find out any other way.

Today at German Channel,

one of the busiest manta sites in Palau

there are no mantas to be seen.

Currents, which should be incoming

based on the moon cycle have switched to outgoing.

Which means no plankton is flowing into the channel,

and that means fewer mantas.

Mandy spots something on the bottom.

A feathertail stingray,

buried up to its eyes in the sand.

Finally, she sights a large male manta.

It's one called Uncle Fester, a regular at German Channel

that has fed here for at least 10 years.

On this day, Mandy sights just three other mantas.

One pregnant female already logged in the database

and two others that passed by

without stopping at the cleaning station.

Mantas may be large,

but they are dwarfed by another giant

living in the waters of Palau,

its barrier reef.

Coral reefs are the world's largest living structures,

made up of millions of tiny plant-like animals

known as "coral polyps".

Reefs begin when a polyp attaches itself

to a surface on the ocean floor

then divides into thousands of clones,

which secrete a calcium carbonate skeleton.

Together, the polyps act as a single, immense organism.

Coral reefs are always growing.

When coral dies,

it leaves behind the rock-like skeleton.

The next generation of coral grows on the old skeleton.

Coral reefs are the rainforests of the sea.

They cover fewer than 2% of the ocean floor

and yet they provide food and shelter

for about one-quarter of all ocean species.

One billion people depend on coral reefs

for food and income from fishing and tourism.

Reefs also provide protection from hurricanes and typhoons.

The Palau Reef believed to have formed

about two million years ago

may be the most essential giant in these waters.

The bone-white beaches of the low-lying Rock Islands

are built from sand that originated as coral.

Reef animals like this Parrotfish

feed on coral and algae

that grows on the surface of the reef.

The parrotfish's hard, beak-like teeth bite off

not just the coral but its hard skeleton as well.

The pulverized hard-coral material

ingested by the fish passes through its digestive system

and is deposited back into the ocean

in clouds of fine white coral sand.

One parrotfish can produce 200 pounds of sand

in a single year.

These Rock Islands built by coral sand

and topped by lush and untouched Pacific jungle

are a major tourist draw.

(♪♪♪)

Palau is a country of just 20,000 people.

In 2015, it received more than 150,000 visitors.

This tiny island nation is struggling to find a balance

between the profit tourism generates

and its impact on the reef.

You know, if you have one or two people

and they go there and they do a little bit of damage,

it's not a big deal.

But if you have thousands and thousands of people

doing that every day, then eventually

we would destroy the corals and destroy the structure.

The research we're doing is to look at these sites

that are visited by tourists

and try to look at their impact on the reef communities,

including the corals and the fish and the animals

that live around the reef.

(♪♪♪)

Today we're trying to look to see the impacts of snorkelers

on shallow coral reefs.

So with Palau's tourism boom

we've seen an increase of tourists

on our snorkeling reefs

and a lot of them have as we've noticed

have very little or little confident

swimming skills.

So we want to see

if that has any impact on the corals

and if they're breaking corals or standing on them

and the effects of that.

To determine the health of the coral at this site,

Evelyn uses a sampling square, called a quadrat.

She throws it randomly, 50 to 60 times at a given site.

When the quadrat lands on the lagoon floor,

she photographs the area within the frame.

Researchers study the photos for evidence of coral damage

and compare the sample photos taken at busy snorkeling sites

With those taken at sites untouched by tourists.

Initial research by Dr. Golbuu's team reveals

that the reefs at crowded snorkeling sites

are dominated by broken coral

which seriously threatens the health of the reef.

But the team is studying more than just corals today.

Gary is going to be counting fish today.

He's one of our experts at the Coral Reef Center.

He knows a lot of our fish species.

The common names, their Palauan names,

as well as their Latin names.

So what he will do is

he will go and measure any fish

that comes within five-meter radius of him.

It's what we call a stationary fish count.

So he'll stay in one spot for 3 minutes

and he'll count any commercially important fish

that comes in that five meter-radius

and then write down their sizes in centimeters.

The fish count, like the reef survey,

is designed to assess the impact of tourism on the lagoon.

Although it's prohibited,

tour operators have been known to feed fish

to attract them to tourist snorkeling sites.

Hand-feeding fish makes them associate humans with food

and can interfere with their natural feeding cycles.

This study will help determine the effect fish feeding has had

on both the size and numbers of fish

in the lagoon.

On a global level, coral reefs face a threat

far greater than tourism.

Ocean acidification.

Humans have produced more and more

carbon dioxide emissions

through the burning of fossil fuels.

More than one-quarter of carbon dioxide

pumped into the atmosphere is dissolved into the oceans

where it upsets the chemical balance

making water more acidic.

This acidification threatens the survival of the animals

on the reef.

The skeletons of most marine organisms,

including crustaceans and fish are made from calcium carbonate.

If the acidity of the water increases,

there are fewer carbonate ions in the water

and it becomes harder for these animals

to form a skeleton.

Acidity can be increased to the point

where even coral can no longer make a skeleton.

Even before that stage, the struggle to make a skeleton

can leave coral weak and vulnerable.

So you might have a coral, but it's not strong,

like, a little storm and it would break.

Or, you would have very high bio-erosion.

A lot of other organisms will be able to live inside

and break the skeleton of the coral.

It's yet another threat on the Palau Barrier Reef

that was already stressed by reckless overfishing.

For decades, foreign fishing vessels

plundered these seas,

brutally raking fish from the reef.

The reef is an ecosystem

and you need corals and you need fish

and if you take all the fish from the system,

then you will affect the reefs.

It will affect its health,

and its recovery from disturbance.

And so that is one of the main issues

that we need to ensure that

we still have enough fish in the reef

to allow the reef function to continue.

(♪♪♪)

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Not all of Palau's reefs are two million years old.

Some are relative youngsters

that can be traced back just 70 years,

to a time when battles raged over Palau's tropical skies.

At the bottom of Malakal Harbor

a massive, broken skeleton appears slowly from the blue.

It is the Iro, a Japanese navy tanker

that met its doom during the Second World War

when US airplanes rained explosives

on the Japanese fleet.

Over the decades, the Iro has transformed

into an artificial reef.

Providing shelter for prey, food for predators,

and a breeding ground for the hard and soft corals

that have taken hold of the ship.

She's a spectacular wreck to dive now.

She is teeming with life

and it's just an amazing wreck dive

because you have all that history.

You have all that drama of the sinking of the vessel

and now, 70 years-plus years later,

you look at it and it's just the most

beautiful, spectacular reef there is around there.

The Iro sits upright in its watery grave,

130 feet below the surface.

It's a colossal wreck, nearly 500 feet long,

weighing upwards of 14,000 tons.

And remains largely intact, except for the damage caused

when a massive explosion in the engine room

sent the ship to the bottom.

On the bow, sits a turret gun,

its barrel and armored shield draped in soft coral.

Wrecks like the Iro provide a stable setting for coral.

Corals spawn in the water column.

Eggs are carried by the current and can land anywhere.

The shallow depth, warm water,

and relative stillness of this lagoon

make an ideal breeding ground for the algae

that cements coral reefs together.

The Iro is alive with stony staghorn coral.

Ivory tube sponges.

And black coral trees.

Fish make their home on or near the wreck as well.

Clouds of fry...

Lionfish...

And Pacific spadefish.

Three masts reach toward a distant sky

and provide an ideal surface for sun-seeking organisms,

including huge colonies of bubble tip anemones.

A close relative of both jellyfish and coral

the bubble tip anemone is equipped

with sweeping venom-filled tentacles

that ensnare passing prey.

The slightest touch triggers the tentacles

which inject a paralyzing neurotoxin

into its victim.

But not to the tomato clownfish nestled inside its tentacles.

To defend itself and ensure it has enough to eat,

the bubble tip anemone forms an unlikely alliance.

A layer of mucus on the clownfish's skin

makes it immune to the anemone's lethal sting.

It's a symbiotic relationship,

the anemone protects the clownfish

from predators,

and snacks on its leftover meals.

In return, the clownfish drives off intruders

and cleans the anemone of parasites.

The coral-encrusted Iro is just one of more than 60

Second World War wrecks in Palau.

In March 1944,

US Navy planes appeared high above the islands

bombarding the Japanese fleet with rockets and torpedoes

and sending most of its vessels to the bottom.

The coordinated attack was code-named

"Operation Desecrate One".

In September, 1944, the Island of Peleliu

was the scene of one of the bloodiest battles

of the Second World War.

US marines made an amphibious assault

on these beaches

to liberate the island from Japanese forces.

Fighting lasted for months and took the lives

of 10,000 Japanese and 1,800 American soldiers.

Today the island is surreally peaceful.

Although scattered amid the lush vegetation

are the reminders of past horrors.

A crippled Japanese fighter plane

reclaimed by the jungle.

A gutted US marine landing craft,

corroded by the elements.

And sobering memorials to the thousands,

Japanese and American, that spent their final moments

on what was once an island paradise.

Francis Toribiong is a native Palauan

who grew up on the islands in the years following the war.

He founded Palau's first dive operation

and in the 1980s,

helped discover more than 30 Japanese wrecks...

Including the 285-foot-long Chuyo Maru.

Like the Iro, it sits upright

and is overgrown with corals, sponges

and oysters.

The Chuyo Maru was a coastal freighter,

sent to the bottom during Operation Desecrate One

and discovered by Toribiong in 1989.

I follow the line down and there's nothing there.

I turn around,

there's a huge monster wreck behind me.

My heart went whoomp.

I got scared.

Actually I got a little bit scared

because it's a huge thing right behind me.

I did not see it because I was going down this way.

That was exciting.

I mean that completely changed my way of diving.

Today when I take people diving

I don't try to explain everything.

I talk about safety, the depth, time,

and how we go around this way

and I tell them that's good enough.

I don't want to go beyond that.

Why?

I say I want you to have that excitement like I do.

I want you to have that feeling.

It's hard to explain, but when things are in the water

for last 50-some years, 70 years,

and then the first time you go it's a really exciting dive.

The Chuyo Maru shares its watery grave

with a mystery ship.

Its true name remains unknown,

no records of the ship can be found

in Japanese navy archives.

Though like most wrecks in Palau

it was sunk along with most of the Japanese fleet

during Operation Desecrate One.

Today, it's known simply as the Helmet Wreck,

or Depth Charge Wreck for the dozens of bombs

found in its hold.

Divers are warned not to touch any of the charges.

Many of Palau's wrecks are laden with live ammunition

that can explode if disturbed.

In fact, it's illegal for divers to take anything

from Palau's sunken historical treasures.

The Depth Charge Wreck is a trove

of Second World War artifacts.

The cylinder poking out of the wreck is a clinometer

used to measure the height of clouds

to predict incoming storms.

These Sake bottles

and a corroded Japanese gas mask

are grim reminders that men died here

in what is now a living museum of the sea.

When I take the Japanese diving there

I can see they have a goose bump.

They tell me a little bit eerie.

That's the way they do, I respect that.

It's a part of history

and part of our relationship with Japan

and something that people need to understand

that we need to respect other people.

These once-mighty wrecks won't last forever.

Saltwater corrodes and eats away at the steel skeletons.

Eventually, the lagoon will swallow these remains.

Over the eons, saltwater erosion has also carved stunning caverns

and tunnels into Palau's limestone geography.

(♪♪♪)

Hidden 12 feet below the surface

Chandelier Cave is one of the largest cave systems

in Palau.

At one time, it was an open-air cave,

on the surface of the Rock Islands.

After the last ice age, oceans rose

filling the cave with seawater and concealing the entrance.

Stalactites, formed from calcite

deposited by water dripping from the cave ceiling,

hang like glittering light fixtures,

giving Chandelier Cave its name.

Inside the cave there is no sunlight

to nourish plankton.

Free from these microscopic organisms,

the water is crystal clear.

At Siaes Tunnel divers drop down

to enter a chamber that reaches depths

of more than 140 feet.

(♪♪♪)

Even this far below the surface

sunlight penetrates the tunnel

to illuminate gorgeous orange sea fans

and lionfish nibbling on soft corals.

Palau is a jumping-off point for some of the deepest diving

in the Pacific.

It sits atop what is essentially a sunken mountain range.

A steep drop-off, more than 30,000 feet deep

fringes the islands.

This is The Palau Trench.

It just drops off and it plummets into the abyss

and very, very close to shore as well.

So people always talk about the Marianas Trench,

the deepest part of the planet.

That's a challenger deep.

That's nearly 300 kilometers off shore.

We've got massively deep water

within 15 or 20 kilometers of our shoreline.

So it's very, very unique.

The Palau Trench is deep enough

to completely submerge Mount Everest.

Scuba divers typically descend about 130 feet,

less than half of 1% of the depth of the trench.

Divers have only just scratched it's surface.

What is known about what's down the Palau Trench?

Honestly very, very little.

The old phrase that we've all heard that

"We know more about the surface of the moon and Mars

than we know about the bottom of the ocean" holds true.

Collins has compiled a 3D map of the trench

from satellite-derived gravity data

and sonar measurements collected on dives.

The green shows the Palau islands

just the tip of a massive underwater mountain.

You can see that some of these sheer walls,

they plummet miles, literally miles,

two or three miles before they might have a slight shelf

and another feature and, again,

before they just plummet into the abyssal plain

at over 9,000 meters deep.

Once we look over the edge of that reef,

sometimes it's a little daunting

because you have the beautiful colors,

the shallow waters, and you just look over

and it's literally looking down a cliff.

And especially knowing how deep that is.

So sometime it can be a little bit daunting

and a little bit disorientating but it's also a bit thrilling.

A short boat ride from Siaes Tunnel

lies a marine environment so spectacular

it's considered one of the seven underwater wonders

of the world.

Palau is home to more than 50 marine lakes.

When glaciers melted at the end of the last ice age

10,000 years ago

ocean levels rose,

filling low-lying areas with seawater.

Fissures and tunnels in the limestone

connect these saltwater lakes to the ocean.

Beneath the surface of a 100-foot-deep marine lake

on the uninhabited coral island of Eil Malik

is an astonishing sight.

(♪♪♪)

Millions of rippling jellyfish pack the fluorescent-green water

their shimmering bodies casting a luminescent glow.

This is Jellyfish Lake.

These golden jellyfish have thrived in the lake

for more than 10,000 years.

In this closed system, there are few predators.

So the jellyfish have lost their need to sting.

They possess stinging cells,

just not ones powerful enough to cause serious harm to humans.

Getting to swim through that many jellyfish

is a pretty weird but wonderful experience.

When you find a very dense patch of them,

the whole lake is essentially pulsating with these jellyfish

so it's very cool to see.

They're not harmful,

unless you have very sensitive skin.

They're very soft,

they're just doing their own thing cruising along.

There's another, even more remarkable way

in which these jellyfish differ from their cousins

in Palau's nearby ocean lagoons.

Most species of jellyfish, like this moon jelly,

drift serenely on ocean currents

just as their ancestors have

since before the age of the dinosaurs.

The five million specimens at Jellyfish Lake

are far from passive.

They may look like their drifting aimlessly

but in fact they're on a journey.

Migrating almost a mile,

they follow the same path and same schedule every day.

As the sun rises in the east,

the jellyfish swim toward its life-giving rays.

They have to make the trek, to survive.

The body of each jellyfish contains a crop of algae,

its main source of food.

The algae processes sunlight to produce sugar

that feeds the jellyfish.

For hours, they swim east toward the sun

pumping water through their bells,

and rotating counter-clockwise

to provide even exposure to the sun

for the algae in their bodies.

Trees that surround and shelter the lake

also cast shadows on the surface.

The jellyfish must avoid the shade.

They need to absorb as much sunlight as possible

to maximize the energy created by the algae

within their bells.

So what they do is they follow the sun around the lake

so at a given time during the day

they'll be in the brightest spot of the lake

finding the most food.

As the sun begins to set in the west,

the dense bloom of jellyfish reverses course

and heads back to the western shore.

All this swimming churns up nutrients in the water

that form the base of the lake's food chain.

When the sun disappears into the horizon,

the jellyfish sink 50 feet down,

where nitrogen-rich waters help sustain the algae

in their bodies,

before ascending to the surface before dawn

to start their complex migration once more.

Of Palau's 52 marine lakes,

five are home to persistent populations

of golden jellyfish.

Fragile creatures, they have shown

an outstanding ability to adapt in these land-locked lakes,

lakes that were once connected to the ocean

that defines and sustains this tiny island nation.

(♪♪♪)

For thousands of years,

Palauans have depended on their coral reef

for survival.

It's such a diverse habitat.

So if we lose that,

we've really lost a lot of our ocean,

a lot of the biodiversity in our ocean.

Billions of people live near the coast

and they depend on coral reefs, so all of those.

And especially us on these small islands,

we would be severely affected

and our way of life, you know, it's totally changed.

It would be a devastation to us, you know, not to have the reef.

These Pacific islanders hold to traditions

of deep respect for the sea.

Yesterday, one of my customer asked me,

"Francis, don't you get tired

of coming out here in the ocean?"

And I said: "It's amazing."

Not one day is the same as another day, never the same.

The cloud, the sun, the rain, the wind,

the tide, the movement.

"So never the same so that's why

I don't get tired of going to the ocean."

In these protected waters

that contain more species of marine creatures

than almost any place else on earth,

long-lost war wrecks claimed by the power of the ocean

burst with energy and life.

Yawning trenches plunge into unseen depths,

and manta rays soar,

here, in this exotic land of the giants.

(♪♪♪)

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