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The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometers (1,400 mi) over an area of approximately 344,400 square kilometers (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia. The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms.
The Great Barrier Reef is a massive coral reef system located in the Coral Sea off the coast of Queensland, Australia. It consists of over 2,900 individual reefs and 900 islands, stretching for over 2,300 kilometers and covering an area of approximately 344,400 square kilometers. It is the world's largest single structure made by living organisms and can even be seen from outer space.