[Biology & Species] The secret of a squid's ability to change colors may lie in an unexpected sparkle on its skin

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From Phys.org:

In the blink of an eye, squid can change from sandy brown to vibrant red or ripple with bright metallic rainbows. Their color-changing abilities (and those of their fellow cephalopods, octopus and cuttlefish) are more sophisticated than any found in the animal kingdom.

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From :

In the blink of an eye, the squid's skin changes color and pattern for the purpose of camouflage or sexual signaling, a virtuosic display that has long fascinated scientists. Now, collaborators from Northeastern University and the Marine Biological Laboratory (MBL), Woods Hole, report a paradigm-shifting discovery in how specialized organs in squid skin, called chromatophores, contribute to the feat via an elegant interplay of pigmentary action and structural coloration. Their study brings bio-inspired engineers ever closer to building smart skin.

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