Argonauta nodosa aka knobby or knobbed argonaut aka "paper nautilus" is a species of pelagic octopus. The female of the species, like all argonauts, creates a paper-thin eggcase that coils around the octopus much like the way a nautilus lives in its shell (hence the name paper nautilus).
I read somewhere that the spiraling movement of the octopus is supposed to represent the opening of consciousness and "evolutionary spiral symbolism" which sounds an awful lot like hermenuetics if you ask me.... :D
"Cuttlefish, although color-blind, are able to rapidly change the color of their skin to match their surroundings and create chromatically complex patterns, through some other mechanism which is not yet understood. They have been seen to have the ability to assess their surroundings and match the color, contrast and texture of the substrate even in total darkness."