Shikotan Island and the Lesser Kuril Ridge
One-mile water area around Shikotan Island and the Lesser Kuril Ridge is a part of the refuge.
It is inhabited by different marine animals: mammals (whales, dolphins, harbour porpoises (Phocoena phocoena), steller sea lions (Eumetopias jubatus), sea otters (Enhydra lutris), northern fur seals (Callorhinus ursinus), seals), sea birds (auks, skuas, tubenoses, albatrosses, northern storm petrels, seagulls, haliplids and others), сrustaceans, echinoderms, molluscs, hydrozoans and others.