Great Barrier Reef

In the reef,

I can see the endless deep,

The monarch of the sea,

I see the great shark swim.

The beastly shark munches away,

Throughout the day,

Ripples in the sea,

And out comes a fish,

Whose name is Melanie!

Deep in the seabed coral grows,

And the fish inside, bubbles they blow,

Bleaching occurs when corals are under stress,

So let's make them wear a pretty, blue dress!

I can see from different places, 

The Great Barrier Reef takes up a lot of space.