Dive, snorkel, helmet dive, “Scuba Doo” (personal submarine) or cruise about in a glass-bottomed boat. Whatever your preferred discovery mode, you’ll soon see and understand why the Great Barrier Reef is considered the most spectacular coral reef system and one of the seven wonders of the world. You can even take to the skies in a seaplane for aerial views of deserted sand cays. Adventure can be found at every turn – from diving with Minke whales, parasailing off remote island beaches, or spying on baby turtles making their first dash for freedom on the Coral Sea. Tour operators depart daily from Cairns, Mission Beach and Port Douglas, offering certified, introductory scuba, snorkelling and live-aboard courses, as well as glass-bottomed cruises, helmet diving and motorised underwater scooters.