Lakes Superior and Erie have too many sea lampreys. The invasive fish latch onto big fish like lake trout and salmon and drink their blood and body fluids. A single lamprey can kill up to 40 pounds of fish in its lifetime.

Sea lampreys gaining ground in Lakes Superior and Erie, but scientists aren't sure exactly why

The Environment Report, hosted by Lester Graham and other Michigan Public reporters, explores the relationship between the natural world and the everyday lives of people in Michigan.

Share Sea lampreys gaining ground in Lakes Superior and Erie, but scientists aren't sure exactly why

Sign up to save your podcasts

Sea lampreys gaining ground in Lakes Superior and Erie, but scientists aren't sure exactly why

Sea lampreys gaining ground in Lakes Superior and Erie, but scientists aren't sure exactly why