@Ricketyship The thing is, 1.5m unconciousness and out of air situations are normally recoverable - I've seen people come up for 35m unconcious and survive, the guy wasn't a cave diver, he was a caver and a diver. It's so sad he died, but lack of training is always a bad thing in diving rescues (I'm a trained rescue diver)
@Ricketyship yeah it is very relaxing being under the water! If you thought our vis was bad, the rescue cave divers have 0m vis, they are following a line by feel.