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Great Barrier Reef. the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,600 kilometers. Ecology. Environmental threats. Crown-of-thorns starfish – one of the biggest threats to the Great Barrier Reef. Tourism. - PowerPoint PPT Presentation
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Great Barrier Reef
• the world's largest coral reef system •composed of over 2,900 individual reefs and 900 islands •stretching for over 2,600 kilometers
Ecology
Environmental threats
Crown-of-thorns starfish – one of the biggest threats to the Great Barrier Reef
Tourism
A Great Barrier Reef ferry
A scuba diver looking at a giant clam on the Great Barrier Reef
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