Census of Northern Sea Lion ('Eumetopias jubatus') in Central Aleutian Islands, Alaska, 17 June-15 July 1979, with Notes on Other Marine Mammals and Birds

摘要

A summary of a survey of northern sea lion Eumetopias jubatus in the central Aleutian Islands, Alaska, from 17 June to 15 July 1979 is presented. A total of 46,359 sea lions including 2,413 bulls and 5,417 pups were counted. A summary count for the entire Aleutian Islands from the present study and other recent surveys is 89,113. Counts of other marine mammals from the present survey include: 3,170 sea otter, 674 harbor seal, 7 northern fur seal, 43 minke whale, 1 fin whale, 3 other rorquals, 63 killer whale, 16 harbor porpoise, 470 Dall's porpoise, 54 beaked whale, plus 7 unidentified whale.