I found several hand-size shells on a Baja beach last winter, and learned they’re called pen shells. I would have named the translucent beauties fan shells, since they look like fluted fans decorated ...

ATHENS, Greece (AP) — A fan mussel found only in the Mediterranean was officially added to the list of critically endangered species, after scientists recorded a dramatic decline in its population ...

ZAGREB (Reuters) - Croatian marine biologists are struggling to save the largest Mediterranean clam from extinction after a precipitious fall in numbers which they say was probably caused by a deadly ...

It's bendy but brittle, visible but hidden, a silk weaver capable of producing a rare black pearl. Though this cross-trained mollusk sounds like some exotic gem of far-off shores, it's actually quite ...