Alabama pearlshell
Margaritifera marrianae, the Alabama pearlshell, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Margaritiferidae, the freshwater pearl mussels.
This species is endemic to the United States. It is threatened by habitat loss.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...