FILE-In this photo taken on April 6, 2014, the tip of a 40-foot-long section of a shipwreck juts out sand along Lake Michigan north of Glen Arbor, Mich., near the Crystal River. Changing water levels, erosion and water conditions cause shipwrecks in northern Lake Michigan do periodically disappear and re-appear. A U.S. Coast Guard crew from Traverse City, Mich., spotted and photographed several shipwrecks in the area on Friday, April 17, 2015. (Nathan Payne/The Record-Eagle via AP)
LELAND, Mich. (AP) — The clear blue, post-winter waters of northern Lake Michigan have disclosed some of their hidden history to a U.S. Coast Guard crew, which took a series of photographs of shipwrecks lying on the lake bottom in the waters off the Sleeping Bear Dunes National Lakeshore.