From Wikipedia: "The Great Barrier Reef is the world's largest coral reef system,[1][2] composed of over 2,900 individual reefs[3] and 900 islands stretching for 2,600 kilometres (1,616 mi) over an area of approximately 344,400 square kilometres (132,974 sq mi).[4][5] The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia."
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