When the animal is a squid, of course, which are beautiful even in death. Here's the dance of dying chromatophores:
(via Arthropoda)
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The Biology in Science Fiction blog has a short article on color-changing chromatophores in cephalopod skin, and asks
I lack any tattoos, but on the day we can transfect human skin cells with the machinery to make chromoplasts and chromatophores, I'll be first in line at the local genetic modification parlor.