Key to Aquatic Macroinvertebrates in Utah - Double Shell
Double Shelled Organisms - Clams and Mussels (Bivalves)
Clams and mussels, or bivalves, belong to the phylum Mollusca and are identified by a double shell that is hinged on one side. Click on the pictures below to further identify your organism.
1. Shell is greater than 25 mm.