Okay, as my first "official" Special Contributor thread post (therefore showing that I am trying to earn my keep)... A friend of mine has some unfinished histological work done on O. vulgaris and he told me that the hatchlings have "spines" of sorts that help free them from their egg cases. These "spines" (setae?) soon vanish leaving the smooth skinned octos we all know and love. Has anyone ever seen this? If you have, of what are these spines composed, and from what embryonic germ layer are they derived? Being analogous to the vertebrate "egg-teeth", are these found in squid? AND, if they are, could the scales mentioned on Lepidoteuthis be a neotenic derivation of these spines? Could these scales and spines be evolutionary homologues? Any papers on this subject would be cool, if you know where I can look them up. & , John "Keep on Rockin' in the Free World"