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Another hobby, though I haven't been in a few years is SCUBA diving. I learned how to dive under people who took all of the safety limits and procedures quite seriously. I was always diving in a pair with a person I knew, and we always had a comfort level of communication and teamwork based on familiarity with each other.
I left that constant diving life, and later to scratch the diving itch I decided to go do a recreational dive in the US. I showed up to the place and got on the boat. On the ride out to the dive site, I was expecting a pre-dive meeting where details would be gone over, and I'd be assigned my partner so we could interact at least a little bit before getting in the water. That never happened. I was waiting and waiting for the meeting to start when the boat just stopped, the people running it announced we were at the dive spot and just started pointing to pairs of people to be "partners" basically as they were jumping off the boat. I'm used to doing an equipment shakedown with a partner, but my assigned partner was some guy who just hopped in the depths and was gone before I could do any of that.
This was a simple dive to a flat sand bottom. People were mostly looking for trinkets down there. That said, the lack of organization was shocking. When time was up, people just started shooting to the surface. Nobody else was doing safety stops on the way up, and because of me doing it I was the last person out of the water. It was very scary sloppy and I did not go back to any open-to-the-public recreational dives after that.
How deep was the dive? Thinking that these guys do these dives regularly without ever doing safety stops is giving me decompression sickness by proxy
I honestly don't remember. It wasn't notably deep, but I had 100% of the time always done a safety stop and a controlled ascent in all my dives. The part that made this especially bad was people would go absolutely flying from the bottom to the top, with no attempt to control their speed.
My ears are very sensitive, that shit would burst my ears. In a normal swimming pool, I would still need to equalize.