The polar bear is also known as 'the king of the north'.  An average male weighs up to 500 kg. The average female weighs about 250 kg. The polar bear is mostly carnivorous, mainly feeding on seals.

The major threat to the polar bear is climate change. The ice is the habitat of the polar bears. It is the place where they can hunt. If the temperatures rise, the ice will melt and the polar bears will not have any place to live anymore. Other threats include pollution, poaching, and industrial disturbances. Therefor, the polar bear has the conservation status "vulnarable".

Generally, people say polar bears do not have any living subspecies. However, some people say there are two subspecies, the 'Ursus maritimus maritimus' and the 'Ursus maritimus marinus'. The population of all polar bears is estimated just over 20,000, and they live in and around the Arctic Ocean.