Feelers said:And this doesnt explain how a blind octopus can match its surroundings. Also I was under the impression that a severed arm would also match its' surroundings, not sure on either of these facts,(I read them somewhere) can anyone confirm if they are true?
Octopuses aren't blind. But if you meant..how an octo going blind or supposadely IS blind as a result of injury, I wouldn't know the answer to that other than the fact that their color-reflective cells aid them in camoulflage.
Nancy, for the green color, I watched a cuttlefish on a video camoulflage itself to try and take on the shades of a rocky bottom filled with blues and greens. The camoulflage failed, however...to the cuttelfish, all the green and blue rocks were all the same shade of grey. And they remained no different from one another to the cuttlefishes eye. To our eyes, the rocks were green and blue...two different shades. So the cuttle took no pattern at all and simply turned into a very, very light greyish color. This probably works for octo's and squids as well.