Polar animals live near the north pole or south pole, and they are specially adapted to life in these unique regions of the world. Although it is common to lump polar animals together, there are very few species that spend time in both the Arctic and Antarctica. Most polar animals live at just one of the two poles. Some live there year round, and others migrate in and out during the year. No humans live year round in Antarctica, although scientists travel there to study the region and its animal inhabitants. Many people however live year round in the Arctic.