Sub-zero temperatures, six months of darkness, hurricane-force winds, and desert conditions make the polar regions some of the most difficult places for wildlife.Only animals and plants specially adapted to the severe conditions can hope to survive. Every animal from the furry nosed reindeer to the thickly blubbered whale is particularly suited to its environment. For many animals, the sea, which is rich in plankton and krill, is the key to survival.Most mammals and birds, especially in the south, depend on it for their food.
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