Location: Western Gulf of Alaska and Aleutian Islands
Timing: June - July
Project: High-resolution aerial photographic surveys of Steller sea lions were conducted using crewed and uncrewed aircraft. Sea lion pups, juveniles, and adults hauled out on terrestrial sites were surveyed throughout the western Gulf of Alaska to the Aleutian Islands during the peak of the breeding season. Time series of counts dating from the mid-1970s are used to track overall and regional trends in population abundance to monitor recovery of the endangered western population.