Explore Australia's Great Barrier Reef from the air and the water! A scenic helicopter flight or high-speed catamaran cruise from Port Douglas will take you to the Outer Barrier Reef platform on Agincourt Reef, a sheltered base for a day on the Great Barrier Reef. Explore the reef snorkeling, from a semi-submersible submarine or from the underwater observatory. You can choose to travel by scenic helicopter one way and cruise by high-speed catamaran the other, or take the helicopter in both directions. The choice is yours!