Slitherine

So I just won a military victory so I continued playing a couple turns just messing around. I dropped nukes all over the place on the remaining AI. Anyways, there was a size 1 city on the coast that had a Barracuda Watercraft garrison. Well, as we all know, the population decreases by 1 from a nuke so the city disappeared but the garrison survived the blast. The result was a naval unit sitting on some hills. I guess this isn't a bug per se, but it's interesting. I didn't keep playing to see what would happen. I suppose it's not that big a deal.

Oh, It all makes sense now! But they only gain that ability after they get nuked; or else we would be able to do that during a normal game.

I guess they mutated from nuke's radioactivity and sprouted legs?

Thanks! Should be fixed with the next update.