What attracts millions of tourist year round?

The Great Barrier Reef attracts millions of tourist year round to experience its vibrant and diverse marine ecosystem as well as its scenic beauty. Spanning over 142,900 square miles on the coast of Australia, it consist of over 3,000 individual reefs and 900 islands that are the habitats of various plant and animal species, some found nowhere else. Many people visit this World Heritage Site to scuba dive and snorkel.