Sea lamprey control photo 11个月 0 Biological Science Technician Tiffany Opalka-Myers helps out with a sea lamprey treatment on the St. Mary's River in upper Michigan. photo 11个月 0 Sea Lamprey photo 11个月 0 Service Employee Matt Symbal electrofishing in Wislon Creek, a tributary to the Big Garlic River, Marquette County, MI. photo 11个月 0 Fish Biologist Mary Henson takes a water sample during a study designed to determine lampricide concentrations in sediment and water at Hog Island Creek photo 11个月 0 Matt Symbal electrofishing the Rock River, Alger County, Michigan photo 11个月 0 Invasive Sea Lamprey and Native Chestnut Lamprey photo 差不多3年 0 Service Employee Shawn Nowicki Electrofishing photo 差不多3年 0 Invasive Sea Lamprey and Native Chestnut Lamprey photo 差不多3年 0