Australia rail travel a bargain for backpackers. Blue Mountains Australia - Accommodation, Attractions... Exploring the Great Barrier Reef. From Cairns in the far north of Queensland, a 45-minute boat ride will take you to Green Island.
This is one of the smallest islands on the reef and looks like a child's drawing of a deserted island - lush vegetation, fringed with white sand and surrounded by azure seas. Snorkelling here is superb right from the beach.