They can swim 50 miles, run faster than Usain Bolt and can weigh 800 kilos.
On Monday, International Polar Bear Day is celebrated to raise awareness of the great animal – whose future looks bleak as the ice melts in the Arctic.
Tom Arnbom, expert at WWF, talks about his own experiences about the animal and why climate change is a problem.
The expert’s forecast
– The sea ice is melting and that means that their hunting grounds disappear, where they catch seals or whales, and it is estimated that a third of the polar bears will be gone, already in 25, 30 years, he says.
Fortunately, the polar bear will not become extinct, says the expert.
– They will remain around north-west Greenland or north-east Canada, because there will always be ice left. The polar bear will have a last stronghold up there.
See Tom Arnbom’s own polar bear photos – and hear about his best polar bear memory – in the player above.