The fjordland is connected through oceanographic processes utilizing nutrients and productivity from the North Pacific, and the waterways are critical habitat for substantial Northern Pacific cetacean populations, including fin whales, orca, and humpback whales.[3] Major features include the Inside Passage, a coastal route for ships and boats weaving through a network of passages among the many fjordland islands.
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Gregr EJ, Trites AW (2001). "Predictions of critical habitat for five whale species in the waters of coastal British Columbia". Canadian Journal of Fisheries and Aquatic Sciences. 58 (7): 1265–1285. doi:10.1139/f01-078.