The Great Barrier Reef is the world's largest coral reef system, located off the coast of Queensland, Australia. Stretching over 2,300 kilometers, it is made up of nearly 3,000 individual reefs and 900 islands. This UNESCO World Heritage site is home to a diverse range of marine life, including fish, sea turtles, and various coral species. The reef plays a crucial role in the ecosystem, providing habitat and food for countless organisms. It also supports local economies through tourism and fishing. However, the Great Barrier Reef faces threats from climate change, pollution, and overfishing, making its conservation essential for future generations.