Albinism is a condition in which there is a problem with the pigment of the skin, hair, and eyes as a result of a lack of an enzyme known as Tyrosinase. This extremely rare condition effects all animals with a vertebrae, and is known for causing skin, hair/fur, and eyes to turn a very strong white colour.
Albino dolphins are typically white, although there have only been a few sightings of a white dolphin - one of which only lasted 20 minutes and the dolphin was never seen again. However, an albino dolphin can also be pink - as is the case with 'Pinky the Dolphin.'
Pinky was spotted in 2007 by a Louisiana boat captain in Lake Calcasieu, an inland lake in the Gulf of Mexico. Pinky was seen swimming with a small group of dolphins, all of which, were the typical greyish colour.