Great Barrier Reef - Nature's Miracle

00:00:06 MONTY HALLS: Off the east coast of Australia

00:02:31 And just when you think you know the reef, it changes

00:05:13 Its a miraculous partnership

00:07:17 The sheer number of creatures that live here

00:09:45 hunting the wildlife in areas that are now deep underwater:

00:12:05 it represented nothing more than a deadly labyrinth.

00:14:55 Despite the dangers

00:17:46 But there's one fish species that is so good at defending

00:19:38 Even though I'm so much bigger than this damsel fish

00:21:59 I'm keenly aware that these are very small waves.

00:24:26 Nowhere else on the reef are they found in such numbers and such variety.

00:27:19 to an ever-changing hostile one.

00:29:06 and increasing the blood supply to others.

00:32:05 Lemon sharks hug the shore, surrounded by schooling baitfish.

00:35:10 Looks like some bizarre sort of galactic broccoli

00:37:50 These animals can live for a very long time, up to 35 years

00:39:44 It sniffs them out whilst they're sleeping.

00:41:51 blowing up the mucous bubble around it'.

00:45:16 Every now and then

00:48:05 whale colonies go to war with one another.

00:50:57 Once they've started courting, they don't like any interruption.

00:53:31 On only a few summer nights each year

00:55:59 and start a new coral reef.

00:57:43 These are home to some of the world's strangest creatures.