So I am in high school, so I am not the smartest. That is why I have came here. I was on Kickstarter and saw a underwater drone and I got to thinking, what if we could breathe underwater. So obviously we can't take oxygen from H2O, so what if I made a giant vape type machine? What happens if you have a intake of water, some burners to create steam to breathe, and put it all in a mask sort of like a gasmask but with burners. But my big problem is that you cannot breathe in straight oxygen, but you need oxygen to breathe, BUT you CAN breathe steam, so it would take in water, create steam, you breathe it in and exhale it. I have no clue if this would work, but as a 10th grader in high school, this could change my whole life if I found a way for this to actually work. I have to go right now but will edit this more later, please comment.