Jan,
If my memory serves me well the tridacnids are on the CITES list of
endangered species and cannot be sold in countries abiding by the
agreement. I do not have the URL for CITES but a web search or another
conch-ler might be able to provide it.
Charlie
******************************************************************************
Charlie Sturm, Jr
Research Associate - Section of Invertebrate Zoology
Carnegie Museum of Natural History
Assistant Professor - Family Medicine
[log in to unmask]