Pick up a “shark” and other players are the fish. Shark needs to catch a fish in order to let the finish becomes the shark.
When it is a small party, there will be only one shark, when it is a big party, there will be 2, or 3 sharks. The fish will be allowed to hop in and out the water, each out time will be less than 5 seconds. Once caught, the finish will sit on the side of pool.