swimming in the hail

I was swimming tonight and got about a third of the way down the pool doing the breaststroke when it started to hail. Every time I popped my head out of the water to breathe, I got blasted in the face by blowing hail. So I was taking quick breaths and plunging my head back into the warm water. By the time I got to the other end of the pool the hail had stopped and the air was calm.