The most horrible thing I ever sight

This is like a horrible experience, it's not excatly something I sight it's something that I experienced.

It all began when I was in a summer camp, I was 5 years old, in a swimming competition. Everything was fine, the competition started and before getting in the middle of the pool (it was very, very deep) I stopped stamping on the water, so I started to sink I was trying to get in the surface but I couldn't so I was sinkin down with my eyes open underwater, I was feeling horrible and very scared I thought I was going to die, but suddenly a safeguard came into my rescue, he pulled me to the surface and I was felling ok.