Two World War II Navy Landing Ships (LSMs) and a salt hopper barge mark this reef. The U.S. Navy Explosives Ordnance Disposal Team from Cecil Field Naval Air Station in Jacksonville filled the 200-foot plus LSMs with scrap cable and sunk it with explosives. One LSM can be found on the southern end of the reef, the second LSM near the center of the reef. A more recent addition, placed in 1984, is a 240-foot salt hopper barge. It rests in an inverted position southwest of the reef's north end.