I help out at the zoo that polar bears and cubs, I just want to help clarify about the color of the hair. Their hair is clear and hollow but it is translucent more than transparent. You can see through one strand of fur simply, but looking at the entire coat at once, it appears white. Think about a clear fast food straws; hold it so you are not looking through the center, but at the side. You can see the person or an object across the table. Now hold a large handful and they are now overlapping. All you see now is a lot of white fuzz. Also the skin color is black. That helps absorb the sun's energy for warmth along with their 4 inches of blubber. They are amazing mammals that really adapted for their environment. If anyone wants to know more, I will be more than happy to help!