a lagoon on the northwestern coast of the Bering Sea in the Chukchi National Okrug, Magadan Oblast, RSFSR. Area, 435 sq km. It is separated from the sea by a system of spits. The Main River flows out of Lake Pekul’nei into the Bering Sea. The lake’s northern shores are high, and the southern shores low-lying. Tundra vegetation grows along the shores.