Place brightly colored rocks into a liquid solution and watch them grow into a a brilliant underwater rock garden! The rocks will grow to different heights up to 4 inches in just 120 minutes. This Magic Rocks kit has a shark theme and comes with a shark decal sheet with 5 shark stickers. Place the shark decals on a jar or container (not included). Then, follow the detailed instructions to create a beautiful crystal garden. For ages 10 and up.