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Twenty-four blue whales [20 location-only tags, 4 Advanced Dive Behavior (ADB) tags] and six fin whales (3 locationonly tags, 3 ADB tags) were tagged in August 2014 between Mugu Canyon, west of Malibu, and San Diego. CA .There was a great deal of individual variation in the tracks of both blue and fin whales, with blue whale locations extending from the northern tip of Vancouver Island in British Columbia to the Costa Rica Dome area off Central America, and those of fin whales extending from southern Oregon to central Baja California