The Great Barrier Reef

The Great Barrier Reef is the largest coral reef system in the world.
The marine park stretches over 3000km
It is larger than the Great Wall of China and the only living thing on earth visible from space.
From 20,000 years ago until 6,000 years ago, the sea level rose steadily. As it rose, the corals could then grow higher on the hills of the coastal plain.
The Great Barrier Reef is one of the seven wonders of the natural world.
The Great Barrier Reef World Heritage Area has been divided into 70 bioregions of which 30 are reef bioregions and 40 are non-reef bioregions.
The Great Barrier Reef supports a diversity of life, including many vulnerable or endangered species, some of which may be endemic to the reef system.
Reef including the world's largest collection of corals (more than 400 different kinds of coral), coral sponges, molluscs, rays, dolphins, over 1500 species of tropical fish, more than 200 types of birds, around 20 types of reptiles including sea turtles and giant clams over 120 years old. …