is it possible to control underwater shooting ability

[Bananadine]

Do you mean storm demon? I've seen storm demons and Tartarian Cyclopes throw lightning underwater without any mods. I don't think that helps me though, unless I were to put that lightning weapon on my units--which I don't want to do, because my purpose calls for a powerful, precise, earth-based attack, not a lightning-based attack. So I'm going with multiple Piercers until somebody finds a way to do this.

It's not a huge problem for me but it seems strange that the modding system wouldn't support this. I'd be very annoyed about it if I were trying to make a new underwater nation.