What is it? The world’s largest coral reef, comprising more than 2,900 reefs and 900 islands.
Why go? This one is a no-brainer. Whether you’re a novice snorkeller, hardcore scuba diver or want to see the Great Barrier Reef without getting your hair wet, Cairns’ many tour operators have you covered. Take a boat trip to Green Island for island-based reef exploration, where you can experience the technicolour marvels of more than 600 coral species and 1,500 types of fish (not to mention rays, sharks, dolphins and whales). You can also experience the magic by taking a glass-bottom boat tour.