March 30, 2025 — For more than 50 years, NOAA Fisheries has conducted vital research on seal and sea lion populations at a remote research station on San Miguel Island, California. The long-term data set provides clues to help us understand what environmental conditions lead to malnourished California sea lion pups and increased stranding levels. This information is important for managing their populations and helping rehabilitation centers prepare for periods when sea lion pup strandings may be elevated.
Our research began on San Miguel Island in 1969 after scientists discovered a colony of northern fur seals breeding on Point Bennett the year before. This amazing uninhabited island lies 26 miles offshore of the California coast. It’s part of the Channel Islands National Park and is home to some of the largest populations of land-breeding pinnipeds in the world. Prior to this discovery, northern fur seals were last documented in California during the early 1800s—before their population was wiped out by seal hunters. Researchers began studying the new colony of fur seals along with California sea lions that also breed on the island.