Introducing the Arctic and Antarctic...

Animals that live in polar regions must withstand extremely cold temperatures. No land animals except ice worms and a few kinds of insects live in the parts of polar regions that have ice and snow all year round. However, the seas in the Arctic and Antarctic have large numbers of wildlife. Various animals also live on the coasts of polar seas or the vast Arctic tundra, the cold treeless plains of northern Asia, North America, and Europe.  Animals that live in polar regions have developed bodies and ways of life that enable them to deal with the frigid winter weather. Thick fur, short ears and tails that keep animals from losing too much body heat and hibernation allow animals to live in the frigid weather.