We don’t know if androids dream of electric sheep, but whatever octopuses dream of must be something adventurous because they change color a lot while they’re sleeping. And while the octopus in the ...

Octopus emotions may run skin deep, researchers report January 28 in Current Biology. Changes in octopus skin color primarily function as camouflage, though some evidence points to other purposes.

Octopuses have excellent camouflage. They trick predators by increasing or decreasing skin pigment to change to the same color as rocks. Inspired by octopuses, scientists have developed a synthetic ...