Albinism and Leucism are two similar conditions in animals characterized by reduced pigmentation. The difference is that Leucism, unlike albinism, is caused by a reduction in all types of skin pigment, not just melanin. Albino animals will have red eyes where as animals with Leucism will have lightly pigmented eyes, most often blue.
Here are 25 different animals suffering from these rare pigmentation disorders.
So there you have it, Moby Dick does apparently exist.
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