Polar bears are the largest carnivorous land mammals on Earth and are known for their thick fur, large size and powerful swimming abilities:
Polar bears can grow to be up to 9 feet long and weigh over 1,700 lbs. Males are generally larger than females, weighing between 800–1,300 lbs compared to 300–700 lbs.
Polar bears have two layers of fur: a thick, downy undercoat and a layer of longer guard hairs. Their white or yellowish fur is water repellent and helps them camouflage in the snow and ice. However, their skin is actually black, which helps them absorb heat from the sun.
Polar bears have large feet with black footpads covered in small bumps called papillae that help them grip the ice. Tufts of fur between their toes and footpads also help keep them warm.
Polar bears are strong swimmers and can paddle through the water at speeds of up to six miles per hour.