Fabulous Felix, the touch neuron, lends a hand as Nina and the boys take a good look inside a water soaker. They then go out and visit a very large and watery invention that uses the same science. In this exciting episode we learn all about pressure and discover how to invent a water soaker of our very own.

Originally released by BBC Worldwide Learning, 2009. Streaming video file encoded with permission for digital streaming by Infobase on September 22, 2020.