The Blue Planet, Seas of Life: Tidal Seas Coasts

Description

For most of the year, both poles are dark and bitterly cold. But there is still life at both ends of the Earth. Antarctica is a continent, a land mass in its own right surrounded by ice, where stubborn emperor penguins winter in temperatures below -50 degrees Celsius. The Arctic is a frozen sea surrounded by land, and here the polar bear rules – no seal, whale or bird is safe.