Photos: Shipwrecks exposed in the Great Lakes

Michigan Shipwreck Research Associates members and officials with the Tri-Cities Historical Museum in Grand Haven, Michigan, have surveyed the area where shipwrecks have been exposed in the Grand River and the Great Lakes. Valerie Van Heest, director of MSRA and a maritime historian, says this offers a rare chance to see wrecks without having to scuba dive. The Great Lakes are shrinking because of drought and rising temperatures.