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OSU conducted a 4-year (2014–2017) tagging and tracking study on eastern North Pacific blue whales and fin whales to determine their movement patterns, occurrence, and residence times within U.S. Navy training and testing areas, as well as NMFS-identified BIAs. Tracking periods ranged from 0.6 to 283.8 d. Blue whale locations ranged from the northern tip of Vancouver Island, British Columbia, to very close to the equator, while fin whales were from Haida Gwaii, British Columbia, to the northern coast of Baja California, Mexico.