The Detroit Free Press reports that the Michigan Sea Grant and its partners are helpinig to restore fish habitat to the St. Clair River by placing a number of spawning reefs in the river. "One of the big benefactors of the reefs will be sturgeon." Sturgeon are prehistoric looking fish that can live more than 100 years. For the full story, see here. The FREEP also has a great graphic explaining how the reefs work. The Great Lakes Echo also covers the story here.