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Transient orca, also know as Biggs killer whales, seen in the San Juan Islands, Washington, USA. Killer whales are actually the largest members of the dolphin family, and are regularly seen in the Salish Sea of Washington and British Columbia. Transient orca feed exclusively on marine mammals, including seals, sea lions, and even dolphins and baleen whales. September 2, 2013. Photo © William Drumm.