You should see what a grid of underwater bangalore torpedos (MK 8 hose) does to sea life!
Then the gulls come down for the free floating feast, and there goes shot #2, right next to shot #1.....
Did that off the coast of Qatar. They used a reef there to dump their UXO. We set off a number of charges to clean it up and lordy did we have fish !
I miss those days.......reduced to small test shots at work these days and a few pop bottle rockets on the 4th (my official answer)..........:o)