Came across a really good article from 2005 that kind of illustrates some of the difficulties of cave diving and how quickly things can go wrong. This was a guy trying to retrieve the body of another diver in an extremely deep underwater cave (he died in the attempt, and then the guy who went to try and retrieve his body nearly did too) so not quite comparable to the rescue worker that was helping the Thai kids, but this is as good a thread as any to leave it in.
https://www.outsideonline.com/1922711/raising-dead
I'd really recommend reading the whole thing, but it's pretty long so here's a couple excerpts:
The picture is dark, and sometimes hard to see. But along with the sounds of Shaw's breathing, picked up with perfect clarity by the camera in the stillness of the cave, the video tells the tale of Shaw's final moments. When Shaw reaches the body of Deon Dreyer, he is 12 minutes and 22 seconds into the dive, and he's been on the bottom for just over a minute. He pulls the body bag out and starts to try and work it over Deon's legs. As he does, a cloud of silt obscures the picture. When it clears, Deon's body, its head having fallen off, is floating in front of Shaw.
This was totally unexpected. Deon, as it turned out, was not completely skeletal, and he was no longer stuck in the silt. Instead of decomposing, his corpse had mummified into a soaplike composition that gave it mass and neutral buoyancy. And for some reason—no one has an explanation—the body had become unstuck from the mud as soon as Shaw started working on it. "The fact that the body was now loose, and not pinned to the ground, was not one of the scenarios that we had thought about," Shirley sighs. "The body was not meant to be floating." It's a lot easier to slip a bag over an immobile body than a body floating and rolling in front of you at 886 feet.
Shaw starts fumbling and, for the first time, lets out an audible grunt of effort.
Herbst, listening intently through headphones, heard the steadily increasing distress in Shaw's breathing and knew there was trouble coming. "Breathe slower, man, breathe slower," he urged out loud. Watching the video with a clear head, it is hard not to wonder why Shaw didn't just turn around right then and abandon the dive. In October, he had turned for the surface as soon as his breathing rate increased. Now he was panting, and Deon, who was attached to the cave line, was floating free. The body could have been pulled up. "All the options involved putting the bag on," Shirley explains. "He's sticking with his plan. Which is what you've got to do." Still, when Shirley first saw the video, he couldn't stop himself from pleading, "Leave it, leave it, leave the body now. It's loose and can come up."
Shaw, however, is responding only to the pounding of his narcosis and his determination to finish the job. He keeps working to control the body, letting go of his cave light so he can use both hands. Deon is rolling and turning in front of him, resisting Shaw's efforts to get him into the bag. Shaw has been at it for two minutes, and the cave line is seemingly everywhere. It snags on his cave light, and Shaw pauses to clear it.
At this, Shirley and Herbst bridled. A cave diver should never let gear float loose. "It's a recipe for disaster," says Shirley, who will always regret not being present when Shaw told Hiles he would put the light to the side at times. "Do not do that," he would have warned him.
Now Shaw is acting confused. He is working at the torso, instead of the feet. His movements have lost purpose. After more than two and a half minutes of work—and three minutes and 49 seconds on the bottom—Shaw pulls his shears out, fumbling to open them. The plan was for him to cut the dive tanks away as he rolled the bag over Deon. Shaw's breathing rate continues to increase. Suddenly he loses his footing on the sloping bottom. He scrambles back to the body in a cloud of silt. The grunts of effort, hateful little bursts of sound, are painfully frequent.
Shirley and Herbst guess that Shaw's narcosis was then closer to six or seven martinis. "You focus on the one thing. You don't focus on the dive anymore," Herbst says. "The one thing becomes everything. And I think with Dave it became the body, the body, the body."
Still, Shaw keeps checking the time on his dive computer. After five and a half minutes on the bottom, he's aware enough to know he has to leave, but he doesn't get far. The video shows the bottom moving beneath him. Then Shaw's forward progress stops. His errant cave light has apparently snagged the cave line tied to Deon's tanks. Shaw knows he has caught something and turns awkwardly. His breathing starts to sound desperate. He pulls at the cat's cradle of cave line, as if trying to sort it out. Every breath is now a sharp grunt. Shaw struggles to move forward again but is anchored by the weight of Deon's body. The shears are still in his hand, but he never cuts anything. The pace of his breathing keeps accelerating, and there is a tragic, gasping quality to it, so painful to listen to that Herbst and Shirley will no longer watch the video with sound.
Twenty-one minutes into the dive, the sounds finally start to fade. Dave Shaw, with carbon dioxide suffusing his lungs, is starting to pass out. He is dying. It's heartbreaking to watch. A minute later there is no movement.
******
Okay and...is it just me, or is this a little, um...
"Ten days after Bushman's Hole gave the bodies back, Theo and Marie Dreyer went to see their son. When the morgue attendant asked them to step in, Marie wasn't sure what to expect. When she saw a fully fleshed-out body, her tears stopped, and she felt happy. There was no head, but lying in front of her was her boy. Theo marveled that Deon's legs still held their athletic shape. Marie couldn't believe he was still in his Jockey underwear. "We saw him," she explains, her eyes shining. Overwhelmed, she stepped forward and took her dead son in her arms."
Like I have a ton of sympathy for this woman and I'm glad she got a real funeral for her son, but at some point that's hard to define, that got a little weird.