George and some friends are having fun on the beach. When they go swimming, they find a dolphin that can help find things underwater using echolocation.
The StoryBots learn more about how sound recognition sends signals to the brain. Ears receive sound waves and have to interpret them to understand what is going on around us.
Beakman explains what sound waves and vibration are and explains how these create music. He then goes on to show that the human vocal chords create music due to changing sound vibrations.