4M Diving Submarine</br>COLOR: Gray</br></br>Product Description</br></br>Watch the wonder of chemistry at work as this baking powder powered diving submarine submerges before your eyes just like the real thing.;Simply fill the submarine with baking powder?? place it in water?? and observe as it submerges and re-surfaces over and over again.;An excellent stocking stuffer?? this toy is a great w