Griffiths-Priday Ocean State Park is a 364-acre marine park with 8,316 feet of saltwater Shoreline
on the Pacific Ocean and 9,950 feet of freshwater shoreline on the Copalis River. The park extends from the beach through low dunes to the river, then north to the river's mouth. The Copalis Spit natural area, a designated wildlife refuge, is also part of the park.This oceanside beach day-use park extends through walkable low dunes to a river. The park is the northern border of the National Marine Sanctuary, and the Copalis Spit natural area is a designated wildlife refuge, particularly for birds.The parking area includes space for 37 cars and three non-camping RVs. The park has a restroom facility.