The San Juan Islands National Wildlife Refuge is in the San Juan Islands of the Salish Sea, north of Puget Sound, in the State of Washington. Created in 1976, it comprises 83 small, uninhabited islands, scattered throughout the San Juans, with a combined area of approximately 454 acres (1.84 km2). The Refuge is managed by the U.S. Fish and Wildlife Service. The habitats of the various islands range from small rocks to larger grassy or forested islands, some with high cliffs that provide nesting sites for a large variety of marine birds.