Affectionately known by locals as ‘Rotto’, Rottnest Island lies approximately 20 kilometres off the coast of Perth. The island’s primary attractions are undoubtedly the long white stretches of golden sand beaches, as well as the excellent marine-rich reefs and caves which form an ideal playground for swimmers, divers and snorkelers. Much of the island's quirky charm lies in the fact that it’s largely car-free and visitors typically rent bicycles in order to get around. Cycling around the small island is a real pleasure, and it's relatively easy to find your own secluded beach. You're likely to encounter quokkas, the island's only native land mammals. Also relatively common are New Zealand fur seals, dolphins, and – in season – whales. Don’t miss the Rottnest Island Museum showcasing the history and ecology of the island.