Copalis Refuge consists of a portion of 870 islands, rocks, and reefs extending for more than 100 miles along Washington's Pacific coast from Cape Flattery to Copalis Beach. These islands are protected from human disturbance, yet are close to abundant ocean food sources.

They are a vital sanctuary where 14 species of seabirds nest and raise their young. During migration the total populations of seabirds, waterfowl, and shorebirds may exceed a million birds. Sea lions, harbor seals, sea otters, and whales may also be seen around the islands. Most of the coastal islands are designated as wilderness.