The Great Barrier Reef is the world's largest coral reef system, located off the northeastern coast of Australia. It's composed of about 2,900 individual reefs and stretches over 1,400 miles. The reef is home to diverse marine life, including more than 1,500 species of fish, 411 types of hard coral, and many species of sharks, turtles, and marine mammals. It is also essential to many human activities, like tourism, fishing, and research. However, it is currently facing several threats like climate change, ocean acidification, and pollution, which are harming the delicate balance of its ecosystem.
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