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Australia is home to the Great Barrier Reef, the world's largest structure made by living organisms. It stretches for over 1,400 miles off the coast of Queensland in northeast Australia and is composed of over 2,900 individual reefs and 900 islands. The Great Barrier Reef is a fragile ecosystem that supports a wide diversity of plant and animal life but also faces significant threats from climate change, pollution, and other human impacts.Read less