Quagga mussels approach an inch in length and can vary in color, as these 2006 examples from Lake Michigan illustrate. Quagga and zebra mussels are native to Russia and Ukraine and are believed to have arrived in the U.S. in the 1980s aboard ships that released ballast water into the Great Lakes.
Quagga mussels approach an inch in length and can vary in color, as these 2006 examples from Lake Michigan illustrate. Quagga and zebra mussels are native to Russia and Ukraine and are believed to have arrived in the U.S. in the 1980s aboard ships that released ballast water into the Great Lakes. Michael Sears Milwaukee Journal Sentinel/TNS
Quagga mussels approach an inch in length and can vary in color, as these 2006 examples from Lake Michigan illustrate. Quagga and zebra mussels are native to Russia and Ukraine and are believed to have arrived in the U.S. in the 1980s aboard ships that released ballast water into the Great Lakes. Michael Sears Milwaukee Journal Sentinel/TNS