Polar Bears - Wapusk National Park, Canada

Out on the frozen edge of Hudson Bay, polar bears wander the tundra of Wapusk National Park, a name that means "white bear" in the Cree language.

The coast around Cape Churchill is one of the best places on Earth to see wild polar bears. Each fall they gather along the shore and wait for the bay to freeze, so they can head out onto the sea ice to hunt seals.

In October and November they roam past the camera, sparring and napping in the snow. Once winter sets in, pregnant females dig dens nearby and give birth to cubs that won't see daylight until spring.

Did You Know? Polar bears are classed as marine mammals because they spend so much of their lives on sea ice. Their fur isn’t actually white, either. Each hair is clear and only looks white because it reflects light.

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