I was in Half-Price books yesterday and happened to pick up a copy of Neville Coleman's "Shells Alive". He documented something that I think is remarkable. Over a period of a few hours two male Cassis cornuta first moved toward and then combined to excavate out another male that had tipped over and was stuck in the sand. Further the males used their weight to flip over the sticken male. This seems to be remarkable behaviour; any ideas what biological rational this might provide an advantage? Any other examples of this type of behaviour? ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------