Hi Kay It could be eitherway. I have found Crepidula, Cyclothica, Vermicularia and various Oysters including Anomia on live Scallops over the years. Leslie --------------- In a Cape Cod shell dump, I have found Anomia simplex with corrugated edges from living on Aequipecten irradians. Question: Did they attach to the living pectens, or to empty shells? Kay Peterson ---------------------------------------------------------------------- [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. ----------------------------------------------------------------------