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A sperm-whale (<I>Physeter macrocephalus</i>) or cachalot (French). A, top view of a fetal sperm-whale skull.

Physeter macrocephalus Skull

A sperm-whale (Physeter macrocephalus) or cachalot (French). A, top view of a fetal sperm-whale skull.

"When young it is black, when mature white, sometimes having a yellowish or rosy tinge. It is twelve to eighteen feet long, feeds on fish, and is esteemed good eating by the inhabitants of the northern countries, the seas of which it frequents." &mdash; S. G. Goodrich, 1885

Beluga Whale

"When young it is black, when mature white, sometimes having a yellowish or rosy tinge. It is twelve…