Bogoslof Island bō´gəslôf [key], volcanic islet, c.1.2 mi (.75 km) long, SW Alaska, Aleutian Islands, in the Bering Sea, 61 mi (98 km) NW of Unalaska. The island first appeared in 1796 and has grown and changed shape as a result of eruptions that have recurred irregularly into the 21st cent. Bogoslof, also known as Agasagook, is a breeding site for seabirds, seals, and sea lions.
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