Hi:
I've just joined the list. I'm British; have collected British and
Mediterranean shells for many years on-and-off. I may be able to help
with British enquiries and material; my knowledge of Med shells is much
patchier.
Most of my collecting is of dead shells from beaches, including
micro-shells; I don't hold with live-collecting except of things that
are clearly common where collected.
Bas Payne