Underwater welding does pay extremely well. But to break into that field needs a commercial diving license and lots of time/skill at saturation diving. Basicall

Underwater welding does pay extremely well. But to break into that field needs a commercial diving license and lots of time/skill at saturation diving. Basically, it is easier to train a diver to weld than it is to teach a welder to be a commercial diver. Many (US) entrants are ex-SEAL. There's about 20-25k such people worldwide and the death rate is about 1 in 15. Career ending injuries are about the same. If you need nightmare fuel: "Byford Dolphin".