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The Great Barrier Reef is renowned as "one of the seven natural wonders of the world." The reef itself is a massive living organism composed of billions of tiny coral polyps, making it the only life form on Earth that can be seen with the naked eye from space. The Great Barrier Reef is the largest coral reef system on the planet. It stretches along the northeastern coast of Australia, from the Torres Strait in the north to beyond the Tropic of Capricorn in the south, spanning a distance of 2,300 kilometers. In 1981, UNESCO listed the Great Barrier Reef as a World Heritage Site. The reef is home to thousands of species and is one of the most biodiverse and ecologically dynamic regions on Earth. The Great Barrier Reef's colorful coral reefs are massive, complex in structure, and diverse in species, providing an ideal habitat for a wide array of flora and fauna, including over 600 species of coral, 100 species of jellyfish, 3,000 species of mollusk, 1,600 species of fish, 133 species of sharks and rays, and more than 30 species of whales and dolphins. Despite being a paradise on Earth, the Great Barrier Reef faces significant threats, including global climate change, acid rain, widespread coral bleaching, and overpopulation of starfish. The Great Barrier Reef is famous for its unspoiled natural beauty, attracting visitors from all over the world. Due to environmental factors, the reef is gradually shrinking. If you haven't yet had the chance to witness its splendor, please make it a priority to visit at least once in your lifetime.