The Pribilof Islands (formerly the Northern Fur Seal Islands) are a group of four volcanic islands off the coast of mainland Alaska, in the Bering Sea, about 200 miles (320 km) north of Unalaska and 200 miles (320 km) southwest of Cape Newenham. The Siberia coast is roughly 500 miles (800 km) northwest. About 200 km (77 sq mi) in total area, they are mostly rocky and are covered with tundra, with a population of 572 as of the 2010 census.