Squid, octopuses and cuttlefish are colorblind, but they can still reproduce a near-infinite number of camouflage patterns. New research suggests they're helped along by light-sensing cells in their skin.
Squid, octopuses and cuttlefish are colorblind, but they can still reproduce a near-infinite number of camouflage patterns. New research suggests they're helped along by light-sensing cells in their skin.