I almost drowned in one of these wave pools as a teenager and I had been swimming every summer in swim camps (so a decent swimmer). In my case it was because t

I almost drowned in one of these wave pools as a teenager and I had been swimming every summer in swim camps (so a decent swimmer). In my case it was because there were so many people in the pool that I could barely move, after struggling to breathe a few moments I had to exert myself to climb up someone else's inner tube to gain my breath. But I do recall spending most of my time barely above water and struggling to breathe. Could have gone very bad.