Malacology is the study of mollusks. This includes animals like octopus, snails, slugs, and clams. It is the second largest phylum of animals, making them one of the most successful groups on the planet. There are over 80,000 described species of mollusks with many more left to be discovered. Mullusca is composed of 8 recognized classes including Cephalopoda, Gastropoda, Polyplacophora, Scaphapoda, Monoplacophorans, the Aplacophorans, Caudofoveata and Solenogastres, and Bivalvia.
Clams, Oysters, mussels, ect.
Tusk shells or tooth shells
Snails, Slugs, ect.
Octopus, squids, nautilus, ect.
Shell Identification Guide
Our shell identification catalog currently encompasses the shells of the Eastern coast of the United States. This guide does not include every shell that exists with this range but covers the shells that are likely to be encountered there as well as some rare shells.
Parts of a Shell
Understanding the parts of a shell can make identification guides easier to use and help us understand the organisms that these shell belong to. Learn more about shell morphology with our guide to gastropod shells!