I ponder how morally wrong it would be to remind people that the Bolton Strid is refreshingly cold, but they shouldn't jump in.
It has a 100% fatlity rate. Nobody who jumps in comes out. That's not hyperbole: There's never been a historical case of survival.
But the number of people who leap into rivers and lakes and reservoirs when it gets hot and die due to undertow or thermoclines…
Actually, I once leapt into the North Sea. I was with friends, and we were at a cove marked safe for swimming. My friend pointed to a rock and said 'Let's swim to the rock!".
A few minutes in, we realised due to a little optical illusion, the rock was actually the island of Skomer, several miles away. We turned around, and all was well.
Yeah: No plot twist here, but we did get a crash course in how water density means that you can have a layer of very cold water just under the surface layer of merely cold water (It was the North Sea. The North sea does not do warm. It mostly does fatalities).
We didn't get into trouble because we are not dumbasses, and we were lucky.
The Bolton Strid is 6 feet wide and about 40 ft deep, and is a vertical vortex that sucks down anything that falls in and hammers it on the bottom, then tosses it into one of the underwater caves.
Bodies are often not recovered.
Anyway. I feel like if people ignore the last 50+ years of British PSAs saying "DO NOT GO INT HE WATER!!" and the prior couple of millennia of folklore which generally goes "DO NOT GO IN THe WATER", and decide that doesn't apply to them, we should at least point them to th e one waterway where they're guranteed not to get out, towel off and buy NFTs.