- Aug 16, 2010
So Mr. Ross' flamboyant cuttlefish got me thinking. In Metasepia we really get a glimpse of some of the environmental pressures that lead to the octopus. If I am not mistaken, the cuttlebone is greatly reduced. Metasepia is supposed to tire of swimming more easily. There is also an adaption to walking. Now what I find really interesting on this new take on the octopus' way of life are the little stalks or papillae (I am not sure what to call them) that are located on the ventral side of Metasepia's mantle. Could this eventually lead to a 12 legged octopus-like cephalopod? The muscular, mollusc foot evolved into legs, so perhaps the mantle will too. It seems analogous to the "thumb" of pandas, which is really a separate hand bone (I believe the sesmoid). Anyway, I am not the most well versed in cephalopod evolution, so please correct me if my speculation is way off.