About Glebula rotundata (Lamarck, 1819)
Glebula rotundata, commonly called the round pearlshell, has a rounded shell shape that matches its species name. This species lives in freshwater rivers and streams, but it is also able to survive in areas with some level of salinity. The round pearlshell is primarily found in North American freshwater systems, and occurs especially in locations where freshwater mixes with brackish water, like estuaries.