This seems like a fun toy to have….if I knew how to SWIM!! You set the depth you want the ball to sink and then you and your friends try to retrieve it. It’s blue so it blends in with the water. If you haven’t found it when the timer goes off, a bright flashing light activates. Even though I don’t know how to swim, I loved playing around in the pool when I was growing up. In the shallow end of course!

$19.99 at Frontgate