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Fur is indeed a most luxurious coat of hair. Present day cetaceans have only a
few hairs. They are principally distributed on the head at the snout area.
it is presumed that they perform as a sensing array for the hydrodynamic forces
water moving past the animal. Just like the whisker hairs of a cat or mouse are
used to "feel".
Fossil cetaceans may have had fuller pelts of hair. It is not unreasonable to
that ancient precursors of the cetaceans may have had full coats of hair.
It is quite accurate to say , "all whales have hair." in a modern context.
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