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The Great Barrier Reef is the world's largest coral reef system, located in the Coral Sea off the coast of Queensland, Australia. Stretching over 2,300 kilometers (1,400 miles), it comprises approximately 2,900 individual reefs and 900 islands, making it the largest structure made by living organisms and visible from space. The reef is home to an extraordinary diversity of marine life, including over 1,500 species of fish, 400 species of coral, and numerous endangered species such as the green sea turtle and dugong.

The Great Barrier Reef is the world's most extensive coral reef system, stretching approximately 2,300 kilometers along the northeast coast of Australia in the Coral Sea. Composed of roughly 3,000 individual reef systems and hundreds of islands, it represents the largest living structure on Earth and supports remarkable biodiversity. The reef faces significant environmental pressures from climate change, ocean acidification, and coastal development, though it remains one of the planet's most iconic natural wonders.

The Great Barrier Reef is the largest coral reef ecosystem on Earth, spanning over 2,300 km off Queensland, Australia. It contains around 2,900 individual reefs and 900 islands formed over millions of years by coral polyps. Listed as a UNESCO World Heritage Site in 1981, it supports thousands of marine species but has experienced significant coral bleaching events in recent decades due to rising ocean temperatures.