As waves go up and down they create air pressure inside a chamber. The air escapes the chamber via a wind turbine. The air flow goes in and out via the turbine which only spins in one direction. A flywheel keeps it spinning. The turbine is connected to a generator to generate electric current.
Another idea>>>
Since we inhale and exhale all the time, you could use this turbine to generate electricity and charge your phone or power a flashlight etc etc just by fitting it to your face mask
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