Great Barrier Reef

The Great Barrier Reef is the world's largest coral reef system, stretching over 2,300 kilometers and covering an area of approximately 344,400 square kilometers. It is composed of over 2,900 individual reefs and 900 islands, and is home to a diverse range of life, earning it a place as a World Heritage Site in 1981 and one of the Seven Natural Wonders of the World in 1997. However, the reef is facing significant environmental pressures, including mass coral bleaching, pollution, and climate change, which have resulted in a decline of over half of its coral cover since 1985, with further losses expected due to ongoing bleaching events.learn more on wikipedia