Huh. Just because some dingbat didn’t know his Greek from his Latin roots one hundred years ago is no reason to perpetuate his error: indeed, “octopi” obscures the meaning of the word in precisely the way that the correct “octopods”, or “eight feet” illuminates it. The “pi” of “octopi” simply doesn’t mean anything other than an ill-formed guess at a plural.
The year or two is a sort of apprenticeship-cum-survival-test. Those which survive it, get the chance to go deep and get involved with the real Cephalopod Conspiracy. :: shudder ::
And I heartily agree with the OP. As I understand it, the octopus has color-changing cells called chromatophores which are star-shaped, each arm containing a different pigment…red, yellow, blue, black, white IIRC. To change colors, the 'pus contracts muscles which squeeze the arms to mix pigment in the right proportion…without having to think about it! How does it know?
About chromatophores:
I wonder if i could be genetically altered to have them?
Little known octopus fun-fact to amaze your friends:
Octopodes are not true cephalopods. They are in fact most closely related to the pomegranate. It isn’t immediately obvious, however, until one mounts eight rhubarb stalks on toothpicks around the periphery of a pomegranate.
They do seem to be fun. Some birds really look like they enjoy life too. But octopuses are so cool because they are cephalopods, so no bones, few limits on where they can go, and chromatophores, and brains. It’s all good, except they only live for 3-4 years. Imagine what they would do if they had 50 years of life! And 8 arms! It boggles the mind.
For those of us (OK, me) whose work firewall won’t permit us to dowload video content, would someone please give a brief synopsis of the octopus v. shark video linked above?