[user104658]

I was at the beach last week and there were some swimmers who came round the corner from out of nowhere onto the beach. They each had a large fluorescent float attached to them with a 10-foot rope dragging behind them in the water and if they needed to stop for a minute, they pulled it in and used it for support (it had handles on the sides). I've never seen one before but I was thinking, that's a really sensible safety precaution? Should be standard for swimming in the sea IMO. For one it clearly marked their location and, and it could also be used to stay afloat if anyone got into trouble.