 It is the southernmost true coral reef in the Indian Ocean, and one of the highest latitude reef systems in the world.It is one of the world's most important seabird breeding sites, and is the centre of Western Australia's largest single-species fishery, the western rock lobster fishery.It has a small seasonal population of fishermen, and a limited number of tourists are permitted for day trips, but most of the land area is off limits as conservation habitat.