Very good post. Dr. Jennifer Mather here at the U of L is studying exactly what you mention, communication among cephalopods using their chromatophores, except in squids in the Caribbean.
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-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
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