A sleeping octopus named Heidi cycles through rippling colors and shifting skin patterns while completely unconscious, and the science behind what her brain is doing at that moment raises some ...

An octopus can transform itself in the blink of an eye, changing its colors, patterns, and even the texture of its skin to blend seamlessly into its surroundings. Researchers once observed a single ...

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...

Octopuses can change color while hunting, hiding, communicating, and reacting to the world around them. Apparently, they can also put on quite a show while they sleep. In the remarkable video below, a ...