Video encyclopedia

Polar bear


Polar Bears 101 | Nat Geo Wild


Hungry Polar Bear Ambushes Seal | The Hunt | BBC Earth


Polar Bear Cubs Taking Their First Steps | Planet Earth | BBC Earth


Nora the polar bear cub growing up


Polar Bear vs Walrus | Planet Earth | BBC Earth

The polar bear is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is a large bear, approximately the same size as the omnivorous Kodiak bear. A boar weighs around 350–700 kg (772–1,543 lb), while a sow is about half that size. Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice and open water, and for hunting seals, which make up most of its diet. Although most polar bears are born on land, they spend most of their time on the sea ice. Their scientific name means "maritime bear" and derives from this fact. Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present. Because of their dependence on the sea ice, polar bears are classified as marine mammals.
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  • Naming and etymology 

  • Taxonomy and evolution 

  • Population and distribution 

  • Habitat 

  • Physical characteristics 

  • Life history and behaviour 

  • Hunting 

  • Conservation status, threats, and controversies 

  • In culture