The permanent $1.67 million sea lamprey trap on the East Branch Au Gres River in Iosco County, Michigan is pictured in its final day of construction, Jan 24, 2023. The project represents a long-standing partnership between U.S. Army Corps of Engineers, Detroit District and Great Lakes Fishery Commission to control invasive sea lampreys and protect the $7 billion Great Lakes fishery from the parasitic fish species. (U.S. Army Corps of Engineers Photo by Adam Virga)