I was saddened to read of another swimmer dying while attempting a DYN (type) of swim, and am sharing it so that others will be aware of it. The person who drowned was not a freediver it seems, but a collegiate swimmer. He was attempting to swim "4 laps" after a 4000 yard swim workout. My son is a competitive swimmer and I'm a judge, so I've watched a great deal of it and many workouts. The article doesn't state if the pool was 25 yd or 50m, though logic would say it's probably 25 yard. I haven't looked it up yet. The fact that the swimmer was attempting a swim indicates that he notified the others he was with of what he was going to do. The fact that he drowned suggests that they did not know what to do when he blacked out. This translates to a probably 200 yard attempt, unless "laps" meant "lengths" which non-swimmers frequently get confused. That would be respectable with a monofin, without the 4000 yard workout. In any case, many people will likely tag this as an apnea accident and perhaps a freediving accident, though it highlights all the things we already know about how not to do it. One of the local YMCA's has prominent signage saying that it is forbidden to hold your breath underwater, though the one I swim in does not and hasn't yet said anything about my occasional 25 or 50 yard underwater swims. Perhaps we should all be familiar with the case to be prepared with talking points. Certainly I hope to be in case I have to talk about it with the local Y. http://www.foxnews.com/us/2015/12/2...in-pool-mishap-on-vacation.html?intcmp=hplnws