Willis Island is the only permanently inhabited island in the Coral Sea Islands Territory. Located beyond the Great Barrier Reef, this island stands 280 miles from Cairns. The only residents on the 7.7-hectare sandy island are a handful of Australian Bureau of Meteorology staff members working at the weather monitoring station.The main attractions are the sights you'll see as you cruise through the Coral Sea. Spot tropical birds like black noodies, sooty terns and wedge-tailed shearwaters. Cruise to Willis Island to see the Great Barrier Reef stretch beneath the turquoise waters and the exotic fish that swim here, including angel fish, clown fish and hammerhead sharks.