The Great Barrier Reef is the world's largest reef system[1][2] composed of over 2,900 individual reefs[3] and 900 islands stretching for over 2,600 kilometres (1,600 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi).[4][5] The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.
The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms.[6] This reef structure is composed of and built by billions of tiny organisms, known as coral polyps.[7] This reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981
The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms.[6] This reef structure is composed of and built by billions of tiny organisms, known as coral polyps.[7] This reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981
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