Can you sink a waterball in water?

Question

I wonder if you can sink a waterball. Theoretically, it's an object floating on the water, but maybe it can also be lost? 

Answer 1

You can not sink a waterball in the areas where you can swim, but you can sink it in regular non-swimming areas.

Source: I tested it.

Answer 2

Yes! You can sink a waterball in both swimming and non-swimming areas. During the last waterball tournament hosted by Rookie.com.pl, the waterball sank a few times during competition. Unfortunately I don't have a video to show proof but any of the hosts or participants can confirm this happened at least twice during the tournament. The waterball was heavily used so I'm assuming after a certain amount of movement across water, it will eventually sink.