The Great Barrier Reef is the world's largest coral reef system located off the coast of Queensland, Australia. It stretches for over 2,600 kilometres and covers an area of approximately 344,400 square kilometres, composed of over 2,900 individual reefs and 900 islands.

2. The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for 2,600 kilometres over an area of approximately 344,400 square kilometres. The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.

37. Groetjes Harry