Breath like a Fish!

A FISH – REVOLUTIONARY UNDERWATER BREATHING SYSTEM

A fairly neat idea. I think it has been in many people's minds for a long time to replace bulks oxygen tanks with an efficient way to extract the dissolved oxygen from water like a fish would.

This guy had a vision and thought a related physical principle would work --- the liquid law that states the amount of gas (like oxygen) that can be dissolved in a liquid is proportional to the pressure on the liquid.

Therefore, his system uses a centrifuge that spins to increase the local pressure of the water inside the device, which I'm guessing drastically increases the amount of dissolved oxygen contained in that small space.