I am curious about deep sea mollusks found in association with hydrothermal vents. Some of these are quite large, and look like they are thoroughly calcified shells. Are the pictures decieving, are they just not so deep that CO2 in the water disolves the shell material, or are there other chemical reactions to consider in proximity to these vents? - John >> > > > ---------------------------------------------------------------------- [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. ----------------------------------------------------------------------