So there I was speaking to another guy in my class, after a meeting with our Hons Proj co-ordinator, about the fact it's weird how octopuses are octopods, as opposed to decapods like other ceph's; in that they lack the two tentacles. So he put across an interesting point: Which do you reckon happened first? Did octopods lose their tentacles, or did squid and cuttles develop a new pair of limbs? Got me thinking. I dunno iffen this's been discussed before, or if there's even a more mundane explanation like "octopods are completely seperate from the other two, and elolved pretty much in parallel, or that all three are different and squid and cuttles became similar through convergent evolution. I can't comment on nautiloids or argonauts as I know little of the former and nothing of the latter! So anyhoo, any takers?? Graeme- trying to sound clever, but probably just sounding like a rambling fool!