Sea Otter Awareness Week http://www.iucnredlist.org/details/7750/0 Sea otter "Enhydra lutris (Sea Otter)" threatened population Em Perigo Sea otter IUCN Red List endangered species IUCN Enhydra lutris endangered International Union for Conservation of Nature’s Sea otter threatened population IUCN Red List IUCN IUCN Dostupné online Sea otter IUCN threatened population International Conservation of Nature List Red List of Threatened Species IUCN Red List of Threatened Species: Enhydra lutris Southern sea otters Sea otter according to the IUCN