This removes dirt, sand and algae that could contaminate the inside of the shell when opening. Opening oysters requires care and method: Use an oyster knife. Insert the blade at the hinge ...

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 ...

Oyster shells are bulky and plain, but the treasures they hold go beyond their tasty meat and beautiful pearls. One company in Hong Kong is turning them into materials for constructing buildings.