Spencer Spit State Park is a public recreation area ran under the Washington State Parks. It covers one hundred and thirty-eight acres (56 ha) on the eastern shore of Lopez Island in San Juan County, Washington. It overlooks the Strait of Juan de Fuca. The state park features two sand spits that enclose a salt chuck lagoon that provides a migratory stop for waterfowl, including Bonaparte's gulls. Other local fauna include great blue herons and kingfishers.