score:3
According to United States Naval Administrative History of World War II, Chapter VII - Defensive Measures - Neptune Operation, Part V - Neptune Minesweeping Operations, 552.
West East Total
Moored mines swept 91 95 186
Ground mines swept 140 109 249
Ground mines accounted 6 68 74
for other than by
minesweepers
Total 261 291 552
Ground mines, aka bottom mines, sit on the bottom in shallow water.