This adorable toy shark is ready to float and play, and best of all, it requires no batteries to move and spin its way through the tub. Little ones can easily wind up the bottom fin to make it go, go, go. It's designed to be water-tight, so you don't have to worry about mold and mildew, either. Shark bath toy that floats, swims and spins Wind up bottom fin to activate movement Easy for small hands to operate No batteries required 9+ months