An oil sheen is seen on the shores of Lake Huron near Lakeport State Beach, Mich., July 19, 2012. The sheen is from a diesel fuel spill caused by the sinking of the Arthur J, an 110-foot dredge barge, which sank one mile off shore in Lower Lake Huron. U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read.