User blog comment:Yonkou Rome/Devil Fruit Logia - Water?/@comment-910220-20101016231318

That's similar to the Toro Toro no Mi already. But I do think it is possible for such a water Devil Fruit to exist. The damage, wouldn't that be similar to the Toro Toro no Mi, once captured in a bottle, inescapable? Although, the user can create massive tsunamis and high pressure water cutters, big time damage! Also, if they flood the area, they can drown any other Devil Fruit users. The good and bad balance each other out.