While the South Pole is a continent, the North Pole or the Arctic Circle is not. It is actually located in the middle of a frozen ocean. Just like the South Pole, this region is either in complete sunshine or darkness. Its seasons of winter and summer depend on the tilt of the Earth on its axis. Even with the extreme weather conditions, life still exists at the North Pole. In the summer months, birds migrate. They come to the Arctic Circle to raise their families. Regular animals are whales, caribou, polar bears, and wolves. Robert Peary, an American, is given credit for being the first to arrive at the North Pole in April, 1909 with his assistant, Mathew Henson. Despite the risks involved and even loss of life, many have been drawn to both poles. The North and South Poles are each unique from the other. Because they offer much diversity in life forms and geology, men will continue to explore these harsh worlds. S. Allyn Kelley illustrated by Andrew Wales