Thomas Cronin, biological sciences, and Alexandra Kingston, Ph.D. candidate in biological sciences, worked with scientists at the Marine Biological Laboratory in Massachusetts to find that squid and cuttlefish possess light-sensitive proteins called opsins on their skin. Their findings were published in the Journal of Experimental Biology last week and have received widespread media coverage.
Their discovery suggests, but does not prove, that cephalopods might be able to sense light through their skin. “All the machinery is there for them to be light-sensitive but we can’t prove that,” Cronin told National Geographic. “We don’t know if they contribute to camouflage or are just general light sensors for circadian cycling or are driving hormonal changes. They have a job to do but we don’t know what it is.”
Click here to read “Octopuses, and Maybe Squid, Can Sense Light With Their Skin” in National Geographic.
Light Sensors in Cephalopod Skin (The Scientist)
Scientists say octopuses use opsins in their skin to detect light and color, not their eyes (Standard Daily)
Cephalopods can sense Light through Skin (NY City News)
Cephalopods skin is intrinsically light sensitive contributing to unique and novel patterning abilities (US Finance Post)