Nunivak no͞o´nĭvăk [key], island, c.1,700 sq mi (4,400 sq km), off W Alaska, in the Bering Sea. It is the second largest island in the Bering Sea. Fogbound most of the year, Nunivak is covered with low vegetation and has a small Eskimo population engaged in hunting and fishing. Reindeer and musk oxen have been introduced as part of a national wildlife refuge there. The island was discovered in 1821 by Russian explorers.

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