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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).
The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
Articles relating to the polar bear (Ursus maritimus), a hypercarnivorous species of bear.Its native range lies largely within the Arctic Circle, encompassing the Arctic Ocean and its surrounding seas and landmasses, which includes the northernmost regions of North America and Eurasia.
Bear habitats are generally forests, though some species can be found in grassland and savana regions, and the polar bear lives in arctic and aquatic habitats. Most bears are 1.2–2 m (4–7 ft) long, plus a 3–20 cm (1–8 in) tail, though the polar bear is 2.2–2.44 m (7–8 ft) long, and some subspecies of brown bear can be up to 2.8 m (9 ...
International Polar Bear Day is organized by Polar Bears International to raise awareness about the impact of global warming and reduced sea ice on polar bear populations. [3] The day encourages people to find ways to reduce their carbon output, such as by turning down their thermostat or driving less. [ 4 ]
The Agreement on the Conservation of Polar Bears is a multilateral treaty signed in Oslo, November 15, 1973, by the five nations with the largest polar bear populations: Canada, Denmark (), Norway (), the United States, and the Soviet Union. [1]
A grizzly–polar-bear-hybrid (also named grolar bear, pizzly bear, zebra bear, [1] [2] grizzlar, or nanulak) is a rare ursid hybrid that has occurred both in captivity and in the wild. In 2006, the occurrence of this hybrid in nature was confirmed by testing the DNA of a unique-looking bear who had been shot near Sachs Harbour , Northwest ...
Polar Bears International (PBI) is a non-profit polar bear conservation organization. Their research, education, and action programs address the issues that are endangering polar bears . [ 2 ] The organization also studies polar bears and monitors their activity data which helped lead to the animals being listed as a threatened species . [ 3 ]