ZHMY Swimming Diving Toy for Pool Use Gliding Shark Throwing Torpedo Underwater 8 Pcs/Set Incredible Aqua-energetic hydrodynamic design. Glides long distances underwater, entertaining for the entire family. Fun away to improve swimming skills. Great for swim training practice. 8 brightly colored numbered Dive Rockets. Easy to see and grab underwater. For a longer glide distance grip dive rockets toward the back and throw under water.