Garden Island

Garden Island, Australian island in the Indian Ocean, just off the southwest coast of Western Australia, 30 mi (48 km) southwest of Perth. With Green and Penguin islands, it shelters Cockburn Sound (east) and the approaches to the ports of Fremantle, Kwinana, and Rockingham. Measuring 6 mi by 1 mi, it has an area of 2,338 ac (946 ha) and is generally sandy and thickly wooded, rising to 211 ft (65 m) in hills along...