The territory includes Ashmore Reef (West, Middle, and East Islets) and Cartier Island east with, a total area of within the reefs and including the lagoons, and of dry land. They have a long coastline, over , but there are no ports or harbours, only offshore anchorage. Nearby Hibernia Reef, northeast of Ashmore Reef, is not part of the territory, because it has no permanently dry land area, although large parts of the reef become exposed during low tide.