Our diving water toys are a motivating way to work on hand strength and visual skills. Kids of all ages, love them for the immediacy of their visual feedback and cause and effect properties. Squeeze and the item sinks, release and watch it rise. Each arrive to you in kit form with easy to follow instructions. All you add is a recycled plastic bottle, (of any size but 1 liter works best), and water. The bigger the bottle the harder the squeeze.
Just squeeze the bottle and watch the diver, a squid-like creature, sink to the bottom, where it will stay until grasp is released. Then watch it rise. Buy two and have races.