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Sometimes the anime's versions of moves make more sense. Like Aqua Tail.
Game description:
>The user attacks by swinging its tail as if it were a vicious wave in a raging storm.
No actual water, they're just waving their tail like a wave and it's considered a Water type attack for no reason other than game mechanics. For attacks like that, which are clearly not elemental in any way and only have that type because the game mechanics demand it, it works.
