Sandy Island Marine Provincial Park, formerly Sandy Island Provincial Park and also known as Tree Island Park is an 18 hectare (44 acre) provincial park in British Columbia, Canada, located off the north end of Denman Island, on the west side of the Strait of Georgia to the south of Comox[1]. The park comprises Sandy Island (locally known as Tree Island) and the Seal Islets. It is accessible by boat and, at low tide, by foot across tidal flats from Longbeak Point on Denman Island.