It is pool game that could help to discover the diving and focusing ability. A game set of this consists of Hungry Sharks and 6 Rubber Sink Balls. The underwater visible rubber balls sink to the bottom of the pool, swimmers to dive in with their handy Hungry Shark to collect the balls. The Hungry Shark is specially designed with comfortable shaft and rigid collecting point allowing the rubber jaws to naturally swallow the rubber sink balls. Winner goes to the one who collects the most sink balls.