Witness the power of a deep sea eruption with the Undersea Volcan by Toysmith. Insert a fizzer into the Undersea Volcano chamber Watch it go by placing it into a bathtub filled with water. The fun is limitless and the enjoyment is absolutely spectacular. You will be astounded by the power of the eruption. This is an extremely cool science gadget for bath time.Ages 8 and up.By Toysmith Set includes 2 fizzers for the eruptions, the Eruption Chamber and a fact sheet with scientific explanations to know and tell.