Polar bear (Ursus maritimus) sitting on the snow. This bear, the world's largest land predator, is found throughout the Arctic circumpolar regions, although its range is limited by the extent of the pack ice. A male polar bear can weigh up to 600 kilograms and measure 2.6 metres in length. It hunts prey both on land and in the water. Photographed at Ranua Wildlife Park, Finland.