2018 Results of Steller Sea Lion Surveys in Alaska
The Marine Mammal Laboratory (MML) conducted aerial- and ship-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 in June–July 2018. The occupied aircraft survey team conducted their survey from 23 June to 11 July between the Shumagin Islands (161°W) in the western Gulf of Alaska (GULF) region and Tanaga Island (178°W) in the central Aleutian Islands (ALEU) region. The ship-based survey team conducted visual counts and used an unoccupied aircraft system (UAS or drone), to survey from 21 June to 4 July in the Aleutian Islands between Adak Island (176°W) and Attu Island (172°E). In addition, the Alaska Department of Fish and Game (ADFG) counted Steller sea lions from land on Round (Walrus) Island in Bristol Bay (eastern Bering Sea) on 27 June 2018.