This is sadly a close fight. Celia has magical abilities, but they seem to all be defensive like shape shifting or letting people breathe in water. Her abilities grow while under water, but how useful would she be above it? Crocodile Dundee is a comedy character from his movie trilogy and he’s not much of a fighter, but still has normal human adult level strength. For now, I’m going to give Celia the slight edge as her magic’s gotta count for something and at the very least she can use it in reverse to make Crocodile Dundee be aqua compatible and then in a battle of the water fighters, Celia would have the edge. Celia wins.