Wrangel Island, a Russian island in the Arctic Ocean off the northeastern coast of Siberia. It measures about 50 by 90 miles (80 by 145 km) and is rocky and barren with few permanent residents. Thomas Long, an American whaler, is credited with discovering the island, in 1867. It was named for Baron Ferdinand Wrangel, a Russian explorer who led expeditions in the area in the 1820's.