There are seven species of sturgeon in the United States. These long, armor-plated fish are virtually unchanged since prehistoric times. Mature lake sturgeon grow to about three to five feet in length and can weigh over 100 pounds. It wasn't long ago that Lake Sturgeon were commercially fished on Lake Champlain. Today they are an endangered (threatened) species. Host Lawrence Pyne joins Chet MacKenzie of the Vermont Department of Fish & Wildlife's Lake Champlain Sturgeon Restoration Program, to find out what is being done to reestablish one of the lake's ancient creatures.