Located off the coast of Queensland, the Great Barrier Reef is the world's largest coral reef system composed of roughly 3,000 individual reefs and 900 islands.

Selected as a World Heritage Site in 1981 and it has also been touted as one of the seven natural wonders of the world. It is also the world's largest World Heritage Area extending 2,000 kilometres and covering an area of 35 million hectares.

The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms.

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