2015 Results of Steller Sea Lion Surveys in Alaska
Aerial, ship, and land-based surveys to count Steller sea lion (Eumetopias jubatus) pups (~1 mo old) and non-pups (adults and juveniles ≥ 1 year old) on terrestrial rookery and haulout sites in Alaska were conducted by the MML in June-July 2015. The manned aerial survey was conducted from 24 June to 8 July in southeast Alaska north of Dixon Entrance through the Semidi Islands in the central Gulf of Alaska (between 132°W and 158°W), as well as in northern Bristol Bay (eastern Bering Sea). Shipbased surveys, which included the use of an unmanned aircraft system (UAS), were conducted from 20 June to 1 July in the Aleutian Islands between 172°E and 165°W, and from 13-18 July in the Pribilof Islands (eastern Bering Sea). In addition, Steller sea lions were counted on Round Island in Bristol Bay by Alaska Department of Fish and Game (ADFG) scientists studying Pacific walrus (Odobenus rosmarus divergens) and on St. George (Pribilof) Island by MML scientists studying northern fur seals (Callorhinus ursinus).