Polar bear - Wikipedia
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
Polar bear | Description, Habitat, & Facts | Britannica
2024年11月29日 · Polar bear, great white northern bear found throughout the Arctic region. The polar bear is the largest and most powerful carnivore on land, a title it shares with a subspecies of brown bear called the Kodiak bear.
Polar Bear | Species | WWF - World Wildlife Fund
The largest bear in the world and the Arctic's top predator, polar bears are a powerful symbol of the strength and endurance of the Arctic. The polar bear's Latin name, Ursus maritimus, means "sea bear."
Polar bear - WWF Arctic
Polar bears help us gain an understanding of what is happening throughout the Arctic. All recent indicators show that sea ice in the Arctic is melting at an alarming rate, a problem that needs to be addressed immediately if polar bears, and other species unique to the region, are to survive.
Where Do Polar Bears Live? - Where to Find Them in the Wild
2024年11月17日 · Polar bears have evolved to live in extreme Arctic conditions, where ocean temperatures range from -50°C in winter to 0°C in summer.. Their insulation system consists of multiple layers working together: a dual-layer fur coat with protective guard hairs and insulating underfur, paired with up to 4 inches of blubber under their skin.
Polar Bear - National Geographic
Polar bears roam the Arctic ice sheets and swim in that region's coastal waters. They are very strong swimmers, and their large front paws, which they use to paddle, are slightly webbed.
Ursus maritimus (Polar bear) - International Association for ...
2024年11月24日 · The so-called Arctic Ring of Life is a productive shore lead–polynya system spanning the edge of the polar basin, and it is excellent polar bear habitat [2]. Females in some subpopulations dig maternity dens in snowdrifts on sea ice, but in most subpopulations, pregnant females create dens on land [5].