I don't think cephalopods like it when people start kraken jokes about them.
are you squidding me
Dilation and constriction of these organelles, called chromatophores, are responsible for the squid’s ability to change color.
Inside Nature’s Giants: The Giant Squid (2010)
Squid and Humans Evolved the Same Eye
Like wings, eyes have evolved multiple times in different lineages of animals. According to a new study, humans and cephalopods evolved the same eyes through tweaks to the same gene — even though their eyes arose independently of ours.
Many genes are responsible for making the eye. One holds instructions for making light-sensitive pigments, another provides information for making the lens, and then there are genes that orchestrate it all, telling various parts when and where they need to be assembled. These are called master control genes, and for eyes, the most important one Pax-6. The ancestral Pax-6 gene controlled the formation of a very simple eye: a few light-sensing cells working together in a primitive organism living in the Cambrian period.