Great renders all around mate. Are you using spectral rendering by any chance? And also if I may, I would create a grayscale map for the wetness of the skin so that whichever part of the body is the closest to the water will have the amount of wetness/glossiness you have on your character and gradually lose that attribute as it gets farther away from the water. Excuse my English. Hope its understandable. Just wanted to drop an idea, please don't get me wrong