Narrator: The Kimberley coast is lined by thousands of square kilometers of coral reefs.

♪ This marine wonderland supports a stunning variety of animals.

♪ Especially in the nooks and crannies of the reef.

♪ Like the peacock mantis shrimp.

He may only be the size of your little finger, but he has a superpower.

The most complex and sophisticated eyes in the animal kingdom.

Mantis shrimp eyes are made of thousands of tiny lenses and retinas, and each contains up to 16 different color receptors.

Our eyes only have 3.

♪ They can see ultraviolet light and even polarized light.

They're perfectly adapted to life in the technicolor microworlds of the reef.

♪ Each of his eyes operates independently, giving him a 360-degree view of what's going on.

It's a good thing, too... because there are predators here that love tasty crustaceans.

♪ This octopus is a formidable hunter.

♪ When it decides you're its next meal, it's very hard to escape.

♪ It's never a good idea to rush into dark holes out here.

You never know who might already be in there.

These glowing blue rings spell more trouble for our colorful friend.

They're the calling card of one of the most venomous creatures on the reef.

♪ The small but deadly blue-ringed octopus.

♪ This little wizard is barely the size of a golf ball, but he carries enough venom to kill at least 10 humans.

♪ Our mantis shrimp never stood a chance.