The ribbon seal (Histriophoca fasciata)

Widespread in the Seas of Japan, Bering and Okhotsk, in the Bering Strait region of the Arctic Ocean, in the waters of Russia and Alaska. In autumn and winter it migrates to the south, the extent of migration is not clear. Population size is also unclear, but 120,000 to 160,000 individuals are thought to live in the Bering Sea and about 630,000 in the Sea of Okhotsk.