Armed with passion, science and urgency, state and federal agencies and the Kootenai Tribe of Idaho are working to recover the endangered white sturgeon. The white sturgeon, third largest of the prehistoric species and known to reach nearly 1,800 pounds and 20 feet long, is on a path to extinction in the Kootenai River unless recovery efforts gain momentum. The partners hope that improvements to habitat and river conditions will encourage successful spawning.