1.   The mussels are found only in fastflowing freshwater rivers which are largely free of pollution.

2.   Damming the Tallapoosa was sure to provoke Alabama, and ecologists found protected mussels there.

3.   You find some rocks, then find mussels on the rocks.

4.   Full-grown zebra mussels were found two years later in Lake St. Clair near Detroit.