Albinism is relatively rare in nature, in humans it effects around about 1 in 17,000 people. The most effected population of humans are those of sub-Saharan descent. In nature, it may well be the same kind of stats but you’re a lot less likely to see albino creatures in the wild because they stick out like a sore thumb and get eaten pretty much immediately.
Albinism (or achromia, achromasia, or achromatosis) is a lack of pigment from the skin. It’s congenital and is caused by a defect in tyrosinase, an enzyme involved in producing melanin, the stuff that makes your skin dark when you tan.
These photos of an albino humpback whale called Migaloo are incredible though, I guess he hasn’t got any predators to worry about so he’s just showing off his RAD colour scheme to anyone who’ll look. Moby Dick was about a white whale, but he was a sperm whale so it’s probably a different one. Captain Ahab would have probably filled his pants if he’d seen it coming though.
These photos were taken off the coast of Queensland, Australia, and he’s considered to be the only white guy whale in the world. But who knows.