At around 78 degrees north, warmer waters are brought to the freezing Arctic Ocean by the Gulf Stream and the North Atlantic Drift. The nutrient-rich water helps create a sea floor full of colour ...

Male polar bears can weigh up to 700 kilograms (1,540 pounds) and reach lengths of over three metres (10 feet). This makes them the largest land predators in the world, outmatching even grizzly bears.