Walrus Islands — State Game Sanctuary
Round Island Mammal Checklist

drawing of bird on a skull
Species Status
Dusky shrew (Sorex monticolis) Common
Tundra vole (Microtus oeconomus) Common
Brown lemming (Lemmus trimucronatus) Rare
Red fox (Vulpes vulpes) Common
Arctic fox (Alopex lagopus) Accidental/Casual
Steller sea lion (Eumetopius jubatus) Common
Pacific walrus (Odobenus rosmarus) Common
Harbor seal (Phoca vitulina) Rare
Spotted seal (Phoca largha) Rare
Fur seal (Callorhinus ursinus) Accidental/Casual
Gray whale (Eschrichtius robustus) Uncommon
Humpback whale (Megaptera novaeangliae) Accidental/Casual
Orca (killer whale) (Orcinus orca) Uncommon


  • Common – species occurs in all or nearly all proper habitats, but some areas of presumed suitable habitat are occupied sparsely, not at all, or the sanctuary regularly hosts large numbers of the species.
  • Uncommon – species occurs regularly, but uses only some or very little of the suitable habitat or the sanctuary regularly hosts relatively small numbers of the species; not observed regularly even in proper habitats.
  • Rare – species occurs, or probably occurs, regularly on and near the sanctuary, but in very small numbers.
  • Accidental/Casual – species has been recorded no more than a few times, but irregular observations are likely over a period of years; or a species is so far from its normal range that further observations are unlikely.

See also, the birds of Round Island.