The largest coral reef in the world can probably be found in Cairns, almost as grand that of the coast of Queensland. The Great Barrier Reef is so refined and sterile, that the World Heritage Trust listed it as a protected site. Take a low flying scenic flight over the reef to see it at its best, join expert crews to take you out in the ocean to snorkel, or learn how to scuba dive and see the reefs upclose! The Great Barrier Reef's marine wildlife and exotic coral reef colours is something Australia wouldn't want to trade for anything else. Explore the vast wonders of the ocean and consider yourself lucky to behold the amazing beauty of the Great Barrier Reef. But stay away from prickly reefs, you don't want to experience what Captain Cook did.