Destructive living cargo
argo vessels have introduced a number of aquatic invasive species — such as zebra mussels and round gobies — that have cost the region billions of dollars since the late 1980s, according to the Alliance for the Great Lakes.
Two non-native zooplankton — Thermocyclops crassus and Brachionus leydigii — were found in Lake Erie in recent years.
And, in February, researchers announced a bloody red shrimp was found in the Duluth-Superior harbor on Lake Superior.
Bloody red shrimp were brought by ballast tanks into the Great Lakes and were first discovered in 2006 in lakes Michigan and Ontario.
— Lisa Neff