system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: how does underwater welding work?
gpt
Super hot, water doesn't stand a chance.  Water turns to gas and welding happens.

"The methodby which underwater welding, also known as wet welding, works is incredible. Wet welding is performed using an electrode that contains a cathode, anode, and plasma. The cathode is negatively charged, and the anode is positively charged. As a result of their opposite charges, electrons travel from the cathode down to the anode while positive ions move up to the cathode. As more and more particles move, a massive amount of energy is generated. As a result, the arc coming out of the welder’s tool heats up to over 5,000 degrees Celsius. This arc is protected by a waterproof gaseous bubble that forms around it. Within this protective bubble, it is possible to weld surfaces together."