- Location
- Germany
En masse, no. Doesn't invalidate the safety measure, though.2)I don't think we can waterproof on masse. They don't have the line of sight to be able to do this and it likely wastes a lot of chakra anyway.
If we were to attack a seal-master's fort, we'd use our ocean in a bottle a.k.a. storage seal with water. Even 1cm flooding ruins all seals on the ground. In case there'd be seals above that line, we'd use hiding in the mist.
I'm sure there's large-scale water jutsu that could do the same.
Waterproofing with clay is a viable counter to that.