The pandemic that closed the U.S./Canadian border to people may have opened it to the invasive sea lamprey

Great Lakes invasive species cling to shipments and navigate canals to migrate, but one aquatic invader – sea lamprey – benefitted from border closures instead. During 2020, 93 Great Lakes tributaries and 11 standing bodies of water were scheduled for chemical treatments for lamprey, but only 26 tributaries and six standing bodies of water were completed.

Rapids return means fish returns

Restoring one of the rapids on the St. Marys River is helping diverse fish species recover in the river that connects lakes Superior and Huron, according to a recent study.