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Narwhals [Monodon monoceros] could go extinct as soon as most of the Arctic ice has melted. During the summer, narwhals live along the coasts of Canada, Greenland, and Russia. During the winter, they shelter inside the cracks and crevices of Arctic ice packs. The ice packs protect narwhals from predatory Orca whales [Orcinus orca]. A scarcity or absence of ice packs means greater numbers of narwhals being killed by orca whales. At the same time, narwhals are vulnerable to the effects of global warming on ocean life. Changed ocean temperatures means changed living conditions and therefore changed ocean food chains. Narwhals are picky eaters, and follow specialized diets. Additionally, they migrate between summer and winter feeding grounds. Travel in the open sea, and specific dietary and habitat requirements therefore put narwhals in the 'near threatened' status of survival.

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15y ago

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