Pearls are made by marine oysters and freshwater mussels as a natural defence against an irritant such as a parasite entering their shell or damage to their fragile body. The oyster or mussel slowly ...

and Oysters Clams and mussels are bivalve mollusks, or aquatic animals that have a two-part shell covering a soft body.

Like oysters and mussels, clams are bivalves, a kind of mollusk that's encased in a shell made of two valves, or hinging parts. And that shell comes in all different sizes. There are small clams ...

If your summer diet includes eating all the oysters hours and mussels you can find, you might want to rethink that. According to new research published the Journal of Hazardous Materials ...