User blog comment:Neowitch/Of Swamps, Curses and Turtles/@comment-3125914-20130519115340

Regarding Momonosuke's Devil Fruit, I think he can't bring out the full potential of it yet. The Chinese Dragons have control over weather and water (mostly moving waters such as waterfalls or rivers). So, maybe with some training, he might be able to do that as well. Though, such an amazing ability would be wasted on someone like Momo.