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Northwest, Greenland |
Enlarged tooth projecting from upper jaw of males offers window onto life in frozen seas as far back as 1960s. From 1990 until 2000, ice in northwest Greenland began to decline and the diet of the narwhals shifted to open-ocean prey such as capelin and polar cod. Narwhals accumulated small quantities of mercury as the new items of prey sat lower in the food chain.
Observations From Members 
