Abstract
Wildlife observers recorded the presence and distribution of birds and marine mammals along the cruise tracks of oceanographic expeditions in the Canada Basin, Beaufort Sea and Chukchi Sea during 2002. A total of 74 marine or marine-associated mammals were recorded, representing seven species. A total of 1,213 birds, representing 16 species, were recorded. The surveys took place during a combined 208 h of observation on the Louis S. St. Laurent and the RV Mirai between 16 August and 6 October 2002. The distribution of marine mammals and birds along the cruise tracks was clumped, with species tending to occur in proximity and in areas where productivity is enhanced due to oceanographic features (e.g. submarine canyons, areas of coastal upwelling, shelf break). Few species were observed in the deep Canada Basin. Polar bears and walruses appeared attracted to the ships, while belugas may have avoided them.
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