This UNESCO World Heritage-listed island is home to the southernmost coral reef in the world, as well as the exclusive Capella Lodge. Located two hours by plane from Sydney, this natural paradise allows no more than 400 visitors at a time, in order to protect its rugged volcanic peaks, lush rainforests and azure waters. Wafting through nine luxurious designer suites and an elegant al fresco restaurant, soothing sea breezes entice divers to plunge into the surrounding depths. There are more than 30 dive sites in the Admiralty Islands, and the lodge can arrange a variety of dive courses and tours so that guests can explore the abundance of underwater trenches, caves and volcanic drop-offs. Local highlights include Ned's Beach, where guests can wander the shallow waters feeding silver-drummer and gigantic kingfish by hand.