Point Colville is one of the few publicly owned, protected, marine bluffs in the San Juans. Rare plant species include leathery grape fern (Botrychium multifidum) and brittle prickly pear (Opuntia fragilis). Ancient Douglas fir and Sitka spruce (500-600 years old). Colville supports a particularly abundant, diverse and rare lichen community. WDFW marine mammal haul out sites #393 and # 394 are located in the inter-tidal rocks, ledges and reefs south of Point Colville. Captain George Vancouver is believed to have stopped at Point Colville during his 1792 survey of the Salish Sea.