I am also having the same issue, arma 3 never crashed for me until the new update .

Ran into the same thing pretty funny to watch.

Its defiantly not the most important bug that needs fixing, but it makes battles between divers and people on the beach very awkward. I guess I should not of put the priority to high, but all the same the bug is there and Im just reporting it.

Mythbusters explained it took a few feet of water to halt some types of bullets, a inch right now in game will do this.

I had the same issue, I was trying to figure out what the heck that stuff was floating around.

The same is with the truck head lights.