How has the invasion of zebra mussels affected the Great Lakes?
The zebra mussel is a native of Russia. The species arrived in North America via ships that make their way over from the Black and the Caspian Seas carrying them (or, more probably, their free-swimming forms) aboard in tanks and bilges. These critters are not deadly to man, but they impose an extremely expensive problem on society by virtue of the damage they do as cited above. And the damage continues. Use the links below for more information.
