Adults measure between 51 and 76 cm. Loss of habitat is another major cause of decline. Found around the Arctic sea ice and across the Polar Basin. They are more elongated and streamlined for their aquatic life in comparison to land-dwelling bears. An extra layer of fat beneath the skin provides further insulation from the cold.
All polar bears are white, providing camouflage when hunting.
They are the largest bears with average weights for females of about 250 kg, and for males about 350 kg. Now under threat due to oil explortion in the Arctic region. Found along the northern shores of the Pacific ocean. Of sturdy build, it reaches a length of 1 to 1.2 m. They feed mainly on molluscs and sea urchins, which they crush with their large, blunt teeth.