Albinism occurs most with species that live in caves or in deep sea. On the picture you see a blind crayfish. Albinism is caused by a mutation in that part of the hereditary material that is responsible for the synthesis of pigments. This deviation is recessively heritable . This means that an organism must have the characteristic in duplicate to be an albino.
Human albinos have light blond hair, a pink skin and grey-blue or red eyes.
They are lucifugous, because the skin is oversensitive to sunlight. The skin is more sensitive to several disorders than the normal skin. It is peculiar that among races that have more pigment by nature, exist more albinos. The most frequent albinos are met with African negroes and South American Indians. Famous human albinos are for instance Andy Warhol and Heino.