Distribution information and photos for 44 species of mussels, pill clams, and snails.
This site provides a searchable database that allows the user to search for taxonomic references by taxon, geographical locality, author or keyword.
Overview of endangered, common, and exotic freshwater and marine bivalves and gastropods.
Pictures of North American clams and mussels from Environmental Education on the Internet (EE-Link).
Introduction to the major molluscan classes.
General information about classes of mollusks with extensive links.
Searchable database of marine shells and fresh-water shells and land snails, over 1,300 species in the world are listed. Many photos to aid identification. Taxonomic scheme shown.
Extensive systematic information about freshwater gastropods and bivalves.
Information on all aspects of the study of mollusks in Latvia.
Online field guide to freshwater bivalves and gastropods.