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Here's a cool finding that helps to explained the silvery nature of so many fishes.  "It's optical camouflage, my dear Dr. Watson."

We have only begun to scratch the exquisitely subtle surface of evolutionary development.

C

From The New York Times:

OBSERVATORY: Silvery Fish Elude Predators With Light-Bending

Silver fish have a unique skin that helps them refract light at multiple layers, without polarization, giving them an invisibility cloak.

http://nyti.ms/QOdF6b


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