Deep Sea 3D Page #4

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...but now it's falling apart.

In the last 50 years...

...90 percent of all the big fish

have been taken from the ocean.

We are taking more

than the ocean can give.

We now know that the killing of sharks

is one reason why coral reefs are dying.

Overfishing is decimating one species

after another.

Entire ecosystems...

...have begun to unravel.

But every year,

eight nights after the full moon in August...

...something miraculous happens.

Tonight, in the Gulf of Mexico,

on the flower garden banks...

...the entire coral reef will spawn.

Precisely one hour after sunset...

...coral polyps begin jetting spawn

into the night sea.

Brain corals begin releasing

tiny packets of eggs.

Then star corals.

How is it that millions of tiny polyps...

...from all these corals...

...choose this single moment,

on this single night...

...to spawn?

How do animals that have

no eyes to see...

...or brains to think...

...coordinate this event

with such precision?

That remains a mystery.

These drifting galaxies are the future

of the coral reef.

Most will be lost in the depths...

...but with luck,

a few tiny coral larvae...

...will settle somewhere far away...

...and give birth to new reefs.

And new life.

Not so long ago...

...we knew almost nothing about

the creatures living in this ocean world.

Now we are beginning

to acquaint ourselves with them.

This young right whale is as interested in us

as we are in him.

At last, we're beginning to learn...

...how important all species

are to each other...

...above and below the surface.

And it's clear that our own destiny...

...is linked to theirs.

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