dream report: synchronicity

I found myself at a large indoor public pool, part of a swimming class whose other students were children, around ten years old. I couldn't figure out why no one noticed that I was an adult. We were all standing up on blocks, and there was a pipe running the length of the pool, below our feet and just above the water. We were instructed to reach down to the pipe. All the children could reach, but I came nowhere near. My hands dangled uselessly, and I began to notice how thick the chlorinated air was, and how many people there were, poised over this pipe that ran the length of the pool. There were hundreds of us, and the line of students disappeared somewhere in the mist.
We were then told to let go of the pipe, but dive into the water, keeping as close to the pipe as possible. I couldn't see how this would work out without us cracking our skulls, but when I tried it, I slipped into the water in a perfect, splashless dive. But when I reached the bottom of the pool, it was so disgustingly murky I hesitated to push off from the bottom, even though it was the only way I'd make it back up to the air in time.
Over coffee, Ari told me that he'd dreamed he was on a synchronized diving team, and that he kept executing these perfect dives. We haven't been talking about swimming or diving lately, synchronized or otherwise, so this is another instance that makes me wonder if we talk to each other in our sleep.