
«Coiling Tongue». Coil means to wrap, twist, or wind. I think that before, Kappas were another Sanctuary tool for limiting the opponent's mobility. But no, they had to change everything and give them that stupid jump...

«Water Breath». And here, I don't even have any guesses.
Added 2 hours 10 minutes later
By the way, there are special sounds for these abilities in the game's database. This means that they definitely existed up to a certain point. And then some wonderful person commanded, "REMOVE."