Between a Rock And A Hard Place
There looked to be about 20 of them standing here, just underwater. However, seeing as they were between us and dry land, with more zombies and sharks behind us, I fully understood the expression 'Between a rock and a hard space'.
The boys, standing now, were probably in a worse situation than I was. Being short, my entire body was covered with water, plus a few inches over my head. For the guys, since they were all over 6 feet, it was like the top of their heads were exposed to the air, but if they took off their regulators, they would be inhaling water.
Seeing the problem, all four of them sunk to their knees. While they might be shorter, at least now they were fully submerged and could see the situation better.
Trying to squish down my panic, I studied the zombies in front of me, trying to figure out a way to quickly kill that many of them. But the more I looked at them, the happier I became.