This is very off topic, but I thought this the place to go. 

Decades ago, I spent every day of every summer at the local public pool.  I was a good swimmer, but not great on top of the water, I had a small upper body and am a very petite female.  I could however, hold my breath in a relaxed mode, for 3 minutes under water and spent all my time diving and just seeing how long I could swim in circles under water.  And every other time I turned around the local Navy Seal would dunk me until I drowned.  He'd grab my head and in the water, out of the water.  Over and over. That's how water weathered I was at the time.  And I walked about 4 miles to the pool and back each day.  I also biked 20 miles at a time, any given day.  I was very strong. 

At the time, I was going into my Jr. year in High School.  My city had a midnight swim.  Sponsered by the cheerleaders moms.  My sister  was a past cheerleader, my mom was there as an alumni mom at the concession stand with the other moms, so I went along as my last midnight swim night before I was too old.  I was in my usual spot in the 5' section of the pool.  I had seen three people outside the pool fence that I knew but absolutely no one in the pool that I knew.  This is important.  I dove in at the 5' mark and as I came up out of the water, I swam here every day that summer.  Every single day.  All day long. I'd been swimming here since I was 4.  Red Cross lessions and all.  It was my second home.

THE INCIDENT:  As I came up out of the water, people grabbed my two wrists and my two ankles while my face was still under water.  I was very agile and could fight off four local boys at once any given day.  Somebody grabbed me and my very strong self could not see who they were.  They had me in a hold stretched out to the corners at a kind of angle to my body, and on my back, on top of the water, that was so tight, that I couldn't budge, and worse of all...I couldn't see who they were.  I HAD NO PERIPHERAL VISION, NOT EVEN OF MY FEET.  I figure that they must have stayed below the water line, so they would have had to have been very strong with great technique. They were silent.  They never wrestled with me when I tried to get away, except that they were moving my body across the top of the water toward the other end of the pool to do God knows what with.  There was a gate over there.  I didn't want to find out.

I thought there was nobody my age or older at the pool. The only way I got out of this, was that an old family friend that was very athletic and had a mean voice, jumped into the water right where I was and I begged him to tell them to let me go.  The first time he told them, they were silent and didn't budge.  The second time, they let me go and swam off under water.  SILENTLY.  I never saw them.  I barely heard them.  I went the other way.  I was two feet from the side of the pool and I jumped out and never went back in.  I stood by my mom the rest of the night.  I am sure he knows who they were, but I never thought to ask because he was in college by then and then moved far away.

MY POINT & QUESTION:  Is there a hold like this and who would know what it was?  Would a lifeguard, or a seal or some other water specialty be privy to this that a normal swimmer wouldn't know?  Is there some kind of secret hold that only expert swimmers know?  I never found out who did this, and nobody in my home town has ever mentioned it to me.  But I do have my suspicions.

They were silent and who would know where to stand that I could not see?  I couldn't move my head to see them because of the taughtness of the hold.

Thanks,

Divewings