It might not be a conscious decision for them. Their brain might automatically change their skin color to their surroundings, but that's a complete guess, I jus

It might not be a conscious decision for them. Their brain might automatically change their skin color to their surroundings, but that's a complete guess, I just can't imagine looking at something and "telling" my skin to change to that pattern and color. This article suggests that octopuses see polarized light which might be one key to mimicking color. http://io9.com/5804055/squids-and-octopuses-imitate-color-despite-being-colorblind http://io9.com/5804055/squids-and-octopuses-imitate-color-de...