Zebra Mussels

Sometimes, due to a lack of natural controls such as disease or competitors, a non-native species can easily become established in a new area. Once established, it can out compete and displace the native species, disrupting and degrading the environment. That’s an invasive species. And the zebra mussel is definitely invasive. The zebra mussel is native to the Black, Caspian, and Azov Seas in Eastern Europe and Western Asia. It was probably brought to the Great Lakes in the ballast water of a cargo ship. When the ballast was emptied, the … [Read more...]