Año Nuevo Island

Año Nuevo Island is a small rocky island off the coast of San Mateo County covering roughly 10 acres with steep cliffs and rugged shorelines. The landmass serves as a habitat for numerous marine species and colonial seabirds.

The island was originally a peninsula that separated from the mainland through natural erosion during the 18th century. This geological shift created an isolated setting that allowed independent development.

The University of California Natural Reserve System manages this location in partnership with the California Department of Parks and Recreation.

The island is closed to the public and only authorized researchers can visit. Those interested in observing the wildlife can view the island from nearby coastal vantage points using binoculars or telescopes.

Northern elephant seals and Steller sea lions arrive each year to breed and give birth on the island. The breeding colonies provide scientists with a critical site for studying and monitoring marine populations.

Location: San Mateo County

GPS coordinates: 37.10856,-122.33775

Latest update: December 8, 2025 19:41