Bivalves - Taxonomy on a Half-Shell: Bivalve taxonomy information and research. Includes extensive biobliographic information on bivalve genera. Part of the Partnerships for Enhancing Expertise in Taxonomy (PEET) project of the National Science Foundation.
Field Guide to Freshwater Mussels of the Midwest: Online version of book of the same name, published by the Illinois Natural History Survey.
Freshwater Mussel Genera of the World: Illustrations and information about the various groups.
North Carolina Freshwater Mussels: Species list, species accounts with photos, identification keys, life history, shell anatomy, glossary, and references.
Oyster Reefs: Information about oyster reefs in the Chesapeake Bay region.
Tennessee Freshwater Mussels: McClung Museum virtual exhibit that explores the bivalves' biology and history.
The Eastern Oyster: Crassostrea virginica: Information about the taxonomy and biology of this species from the Maryland Sea Grant.
Unio Gallery: Images of freshwater pearly mussels (unionoids) of North America.