Fincham, Michael W., producer/director; Jack Greer and Dan Terlizzi, executive producers. 2008. UM-SG-DV-2008-04. $5.00.
9 minutes, DVD. Arriving in the Great Lakes in the ballast of a ship, the tiny zebra mussel soon spread down the Mississippi River to New Orleans. This film describes zebra mussels in the U.S. and details the steps that boaters can take to prevent their further spread.