Western Australia (WA) is Australia's largest state and is a place of true contrasts: from desert in the east to 13,000 kilometres of pristine coastline on the west. The state's capital is Perth; the fourth most populous city in Australia and famed for its uncrowded beaches, parklands and fresh seafood. Off the coast of Esperance, in the state's south, is Middle Island, which is home to the extraordinary pink-coloured Lake Hillier