Clams serve a variety of purposes. Some clams make pearls, either in the wild or in a farm-like environment. Other clams are used solely for foods like clam chowder or other seafood options. The shells are often used for decorative purposes or collections.
Biology of mussels & Camps
Clam Identification and Facts (From Arks to Tellins) - Owlcation
Freshwater Clam Dissection Specimen, 4-5
What Are the Three Layers of a Clam Shell?
Tridacna Gigantea Small Complete Clam Shell – Hobson May Collection
Asian Clam Missouri Department of Conservation
Fresh Water Mussel Collection: Introduction - Anatomy -- Illinois State Museum
Frontiers Step in Time: Biomineralisation of Bivalve's Shell
Asian Clam Missouri Department of Conservation
Man finds rare purple pearl in clam at Salt Air restaurant in Rehoboth Beach