@Linkat,
Linkat wrote:
My one experience with a potential drowning was also silent. My friend and I (about tween age) were in my backyard pool - it was about 3 and half feet above ground pool and my friend could swim quite well so you would think no worries about drowing.
For some reason she sort of slunk down in the water near my legs, I looked down and she was just under water not moving. Instinctively I grabbed her and pulled her up. She started gasping and spitting out water. She said she couldn't explain it - she went under and for whatever reason was not able to get up.
The other day I went to the pool. It was relatively empty at that time.
These 2 little boys, about 4 were playing on the steps leading down (there's a ladder, and these broad non-permanent steps, with a handrail.
I said "excuse me" and they moved over to let me pass. I stepped down to where the third (and last) step was......and it wasn't.
So, I'm tilting gracefully

, falling in elegant slow motion, with plenty of time to think "Wha....?"
I felt my ankle come against a metal bar, and not wanting to get more tangled up, I let go of the handrail and sort of phulumfed into the water.
That's what made me think of your friend linkat, the fact that I was only in 3 1/2 feet of water. I could totally see where there was a chance something weird could have happened to a person where they couldn't get up.
When I did stand up, surprised, one of the boys very seriously told me "One of those stairs is broken"
Thanks Chief.
There was an elderly couple, both in their 70's sitting nearby, dangling their legs, and one of them made a comment about being glad they hadn't tried to get in the pool yet.
Yeah, who knows what might have happened.
I told the lifeguard, who said she'd do something. Then, maybe 15 minutes later, I heard a "whoa!" and looked over. The same thing happened to a guy.....who happened to be holding his maybe 9 month old in his arms. They both went under.
Well, I raised a little hell then, I can tell you.
Stair was reattached.
yeah, you don't know what might happen.