c/o Humboldt Bay NWR
Route 1 Box 76
Loleta, CA 95551
(707) 733-5406

Directions: Castle Rock is an island located a half mile offshore of Crescent City, California. The refuge is not open to public access.

Primary Wildlife: Established in 1981 to protect an important migration staging area of the endangered Aleutian Canada goose. -- Second largest seabird breeding colony in California. -- Haul-out for a variety of marine mammals, including California sea lion, Stellar sea lion and northern elephant seal

Habitat: A 14-acre offshore rock with steep cliffs and sparse vegetation.

Recreation and Education: Rock is not open to the public. Wildlife can be observed from the mainland shore.