The Great Barrier Reef is the largest coral reef system in the world, so large that it can be seen from outer space. Tropical North Queensland is the closest access point to the Great Barrier Reef, with tours departing from Cairns, Port Douglas, Cape Tribulation and Mission Beach. This Wonder of the World can be experienced many ways, from a helicopter, glass bottom boat, or by simply jumping in and exploring it yourself! Snorkel over coral gardens teeming with colourful marine life or get a little deeper with an introductory or certified dive.