When I was a young child, my local pool allowed kids to play on large floating foam rafts (like this, but half the length: http://goo.gl/7Y4HbU). One day I decided to show off my underwater swimming skills to a girl I fancied. After a long swim underwater, I exhausted my breath and came to resurface for air, only to get caught under a stacked pile of 5 of these rafts, with kids standing on top like in that photo! I panicked and didn't know what was going on. I don't remember what happened next, but I am told my father was watching me closely and jumped into the pool, pushed the mats off of me (thus throwing like 4 kids off the rafts into the water) and saved me.
Parents were angry at him for throwing their kids into the water. None of them even realized I had almost died. Not that I blame them though, it would probably look pretty funny to see a grown man knock 4 kids off some mats into the pool haha.
I once got "trapped" under one of those big diving rafts they put in lakes[1]. I swam down after one of those colored diving rings, and the wind blew the raft over me while I was under.
I was a pretty strong swimmer at that point, and more than a little lucky as well. I was able to collect my thoughts and get out.
I'm told I was only under there for about ten seconds, but my memory of it feels like about 2-3 minutes. It was easily the scariest thing that ever happened to me personally as a child.
Once we did rafting and our monitor guy told us: when you fall into the water and find yourself under the boat, just don't panic. Don't try to move your head up but rather chose whatever direction and swim until you reach the either side. We thought it would never happen, but we ended up few times in the water just like just like that. And even though it's just a few seconds you are quite disoriented and at first time don't know what to do.
I came to realize that a lot of things in life are easy when you practice beforehand. It's a good idea to identify things you don't expect how to handle and then go and learn to handle them. It's especially important to learn how to use the tools you may need in emergency so that they won't surprise you when you need to use them quickly. Otherwise having those tools only gives you false sense of confidence, which may be dangerous.
So for instance, I bought a fire extinguisher and used it up in some deserted bushes. It was a small expense, but now I'm fully aware how this particular type of extinguishers behave. Or when a friend wanted to buy mace (she was coming home late at night), we bought two and used up one for doing target practice, so that she's aware how the fluid stream behaves and how to aim it.
The biggest problem with this approach that I find is that there are so many things you could prepare yourself. Even if it usually would just take a few minutes and little to no expense, you can't train for things you don't realize exist as concepts or situations. For instance, thanks to this subthread it is the first time it occured to me that a situation like obstructed surface when diving in a pool can occur. I'm adding it to my mental list of things to prepare for when I get the opportunity.
Having done whitewater kayaking for a long time I cannot stress this enough. You need to practice being under water with being denied surfacing even if you strongly want to.
Once you are calm, you can orient yourself by observing air bubbles for example, even in turbulent water.
Yeah, I remember the same thing happening to me as well when I was young. Luckily in my case I had enough air to use my hands to pull myself along the underside to the edge. But you instantly thought "That was far too close". I wonder if they still have those in schools with pools nowadays.
Your humorous view on an otherwise harrowing story brought a smile to my face. Glad you made it. My dad was a life-guard though I never asked him for any stories, I should do that.
Parents were angry at him for throwing their kids into the water. None of them even realized I had almost died. Not that I blame them though, it would probably look pretty funny to see a grown man knock 4 kids off some mats into the pool haha.