Hui o Laka is the nonprofit that oversees the visitor and activity center for Waimea Canyon and Kōke‘e National Park. They serve visitors every day at Kōke‘e Natural History Museum, the Kōke‘e Civilian Conservation Corps Camp and in service around the park as Kōkua Kōke‘e Projects. They welcome volunteers of all ages, either solo or in teams, on special event days or year-round. kokee.org

Surfrider Foundation Kaua‘i is a non-profit environmental organization dedicated to the protection and enjoyment of the world’s oceans, waves and beaches for all people — through conservation, activism, research and education. Surfrider Kaua‘i — joined by local community groups and visitors — organizes regularly scheduled beach cleanups throughout the year. kauai.surfrider.org