From the New York Times:
> Now, a paper published last week in Nature Communications suggests that their chromatophores, previously thought to be mainly pockets of pigment embedded in their skin, are also equipped with tiny reflectors made of proteins. These reflectors aid the squid to produce such a wide array of colors, including iridescent greens and blues, within a second of passing in front of a new background. The research reveals that by using tricks found in other parts of the animal kingdom -- like shimmering butterflies and peacocks -- squid are able to combine multiple approaches to produce their vivid camouflage.
Researchers studied Doryteuthis pealeii, or the longfin squid.
As usual, you can also use this squid post to talk about the security stories in the news that I haven't covered.
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