 The group have a total area of approximately and are contained within the Southwest National Park, part of the Tasmanian Wilderness World Heritage Site and the Port Davey/Bathurst Harbour Marine Nature Reserve.The islands are noted as a breeding site for many seabird species, including little penguin (400 pairs), short-tailed shearwater (3-5000 pairs), fairy prion (20 pairs) and silver gull.The Tasmanian tree skink is present.