Science & Data

New data from satellite instruments shows stark differences in fur seal feeding behavior.

Recovering instruments and collecting blood samples to gain a wealth of new information.

Early results from Saildrone research mission, one fur seal traveled 165 miles for food.

Meeting tagging goals and obtaining important at-sea data about northern fur seals.

Tagging females at the strategic breeding site on the northeast point of St. Paul Island.

This survey is dedicated to gathering information regarding prey abundance, behavior and population trends.

Northern fur seal pup estimates

The northern fur seal (Callorhinus ursinus) population in the Pribilof Islands Archipelago (on St. Paul and St. George Islands, Figs. 1-3) makes up approximately 50% of the world population. Smaller breeding colonies are located on the Kuril and Commander Islands in Russia, Bogoslof Island (Fig. 4) in the southeastern Bering Sea, and San Miguel Island (Fig. 5) and the Farallon Islands off California. The rookeries at the Farallon, San Miguel and Bogoslof Islands were probably colonized in 1996 (Pyle et al. 2001), the late 1950s (DeLong 1982) and 1980 (Lloyd et al. 1981), respectively.

The northern fur seal (Callorhinus ursinus) population in the Pribilof Islands Archipelago (on St. Paul and St. George Islands, Figs. 1-3) makes up approximately 50% of the world population. Smaller breeding colonies are located on the Kuril and Commander Islands in Russia, Bogoslof Island (Figs. 1 and 4) in the southeastern Bering Sea, and San Miguel Island (Fig. 5) off California. The rookeries at San Miguel and Bogoslof Islands probably originated in the late 1950s (DeLong 1982) and 1980 (Lloyd et al. 1981), respectively.

Northern fur seal pup production numbers estimated for Bogoslof Island during August 2011.