Octopus flash, but without the long brown trench-coats. So if you want to make it as a flasher in the marine world, you need a boneless body covered in little bags of coloured pigment. That’s the secret of cephalopods, the group of animals, which the Blue-ringed Octopus belongs to.
The fancy pants name for these little bags of colour are chromatophores and they contain different types of pigments. e.g. melanophores(black), erythrophores (red), xanthophores (yellow), or leucophores (white) when you’re feeling meh… These bags of colour have muscles attached to them, so when the muscles contract the bag opens, and voila…shows the pigment. More muscle contraction equals more colour.
