Arctic Ocean: The Frozen Sea - S1.E1

A year in the High Arctic, where life is exceptionally entwined with the seasons. During the winter, the sun doesn't rise for months on end, creating perpetual night. But in the summer, the Arctic thaws out in an explosion of life. In the winter months it's the kingdom of the polar bear, but summer brings the ice whales: narwhal, beluga and bowhead.