Rhytina

Rhytina (Rhytina stelleri), the Northern Sea Cow. This animal, closely allied to the dugong and manatee, was from 20 ft. to 25 ft. long, of a brownish colour, sometimes marked with white, and had horny plates instead of teeth. It was discovered by Steller in 1741 in the shallow bays round Behring's Island; and in less than thirty years the species was exterminated by the Russian traders, who killed these creatures for food. Nordenskiold believed that some few survived till 1854, but this is not generally accepted.