My friends and I were clearing out the garden of an old abandoned house - it was full of weeds and junk, and at the bottom of the garden was a deep pond, almost like a swamp. We had to clear out the pond, so we were taking turns to dive into the freezing cold water and fish stuff out of the bottom - old TV tubes, bits of wood, plastic milk cartons. The water was sludgy around the edges of the pond, clogged with floating weeds and mud, and some of us were getting stuck there, and had to be pulled out by the others.
Then Peadar went to the bottom of the pond and didn't come back up. We were staring at the water, trying to see his outline, getting more and more anxious. We extended a length of black hosepipe down to him to grab on to, but nothing happened, so Paul decided to go down and get him. He took hold of the hosepipe and jumped into the deepest part of the pond. After a while he jerked on the hose, and we started to pull him up - as he got closer to the surface we could see that he'd found Peadar, who had got stuck in some weeds at the bottom, and they were both holding their breath.
Something went wrong. The hosepipe came free, and they floated back down out of reach, so we sent it back down again. Everyone started to panic.
The next thing I remember, I was indoors, asleep, and I woke up to the feeling of sun on my face and the sound of laughing voices outside. I knew that something was very wrong, but I couldn't quite remember what. I went out and I was in the garden again, and Peadar was standing talking to everyone. That's when I remembered that I had thought he was dead, and I ran up to him and hugged him really tightly, nearly in tears. I told him how happy I was that he was still alive, and he seemed almost a little embarrassed, but he hugged me back.