Narwhal The narwhal ( Monodon monoceros ), or narwhale, is a medium-sized toothed whale that possesses a large "tusk " from a protruding canine tooth . It lives year-round in the Arctic waters around Greenland , Canada, and Russia. Each year, they migrate from bays into the ocean as summer comes. In the winter, the male narwhal’s occasionally dive up to 1,500 m (4,920 ft) in depth, with dives lasting up to 25 minutes. In winter, it feeds on benthic prey, mostly flatfish , under dense pack ice . During the summer, narwhals mostly eat Arctic cod and Greenland halibut , with other fish such as polar cod making up the remainder of their diet Physical Appearance Excluding the male's tusk, the total...
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