What is the largest living coral reef?

The largest living coral reef is the Great Barrier Reef, located off the coast of Queensland, Australia. Spanning over 2,300 kilometers (1,430 miles), it is made up of over 2,900 individual reefs and more than 900 islands. The reef is home to a diverse range of marine life, including thousands of species of fish, coral, and other marine organisms. It is a UNESCO World Heritage site, although it is under threat from climate change, pollution, and overfishing, which have led to coral bleaching and ecosystem damage.