White fur, black skin
If you have ever looked through the underwater observation window and watched the Polar Bears swim, you will know that they are black. Under their white fur you can catch a glimpse of their black skin when they move through the water. This is the perfect protection from the cold: The sun's rays are reflected from the white fur onto the dark skin allowing warmth to be retained.
Our polar bears receive regular training. Films of their training can be viewed on a screen at the polar bear enclosure.