At high tide, the beach gets pretty crowded.

But these birds aren't here to work on their tan.

They're waiting for some of the largest tides on Earth to reveal Roebuck Bay's main attraction, 160,000 square kilometers of the richest intertidal mudflats on the planet.

Every square meter of this mud hides hundreds of different species and over a thousand animals.

It's the world's greatest all-you-can-eat bird buffet.

♪ One of the most delicious items on the menu is the Buggle Buggle.

At low tide, they emerge from their burrows to feed in the rich mud.

A fish unlike any other, mudskippers aren't confined to the water-- as long as they stay hydrated.

♪ They can even moisturize their eyeballs, making them one of the only fish that can wink.

In breeding season, these mudskippers show off their blue spots to attract the ladies.

♪ But good looks don't always get the girl.

And this female Buggle Buggle knows she's a high-value fish.

These two are gonna have to prove their worth in battle.

[Croaking] ♪ [Groaning] ♪ The loser slides back to his burrow, tail between his fins.

♪ But don't be ashamed, Buggle Buggle, there's plenty of fish in the sea if you can make it through the night.

[Thunder rumbling] For the Buggle Buggle, a full moon can be trouble-trouble, especially in Roebuck Bay.

When the birds go to bed, other creatures are just waking up.

♪ At night, a dangerous predator lies in wait.

The Roebuck Bay mangrove snake.

It's an ambush predator.

And tonight, mudskippers are on the menu.

♪ These snakes are triggered by movement.

♪ And the full moon has Buggle Buggle in the spotlight.

♪ Found nowhere else on Earth, the Roebuck Bay mangrove snake is unique to this one bay.

[Gulp] And thanks to the abundance of tasty mudskippers, there's nowhere else she'd rather be.