*Polar bears are great swimmers.
The longest a polar bear swim on record was 685 km.
*Polar bear cubs weigh about a pound dat birth.
An adult polar bear can weigh more than 450 kg.
*Polar bears are the largest land carnivores on earth.
*Adult polar bears have more than 13 cm of fat under their skin.
This fat keeps them warm in one of the colderst places on earth.