As a former harvest Diver, I can tell you it's a profession fraught with hazards. California loses at least one Abalone Diver every year. Not common enough to deter most of us from going to work but common enough that you think about it every time you gear up.
Then there are other dangers. I've lost count of how many times I've been caught in fishing nets, gotten hung up in the kelp, had my hose (surface supplied air) hit by propellers. I once had a guy who was filling in for the skipper, getting high on deck and then decided to move the boat while I was at 60' without any communication with me whatsoever. He just put the boat in gear and took off at about 5 knots against a 2 knot current. Now mind you, this was a surface supplied operation so I was connected to the boat by the air hose. I went from 60' to 30' in about a second. Had I not been screaming at the guy over the com system to stop, I would have surely embolised.
Then there was the time the evil poachers swam up behind me and tried to cut my air hose...no wait...that one didn't really happen, that was an episode of "Sea Hunt".
It's like the tag line from the old 'Super Chicken' cartoon, "You knew the job was dangerous when you took it, Fred."
Edited to add: I would always enjoy messing with the newbies. I have a very large crescent shaped scar from having a kidney removed and I'd tell the newbies it was a shark bite. They'd fall for it every time! :laugh: