waves and bubble pump
something different; tidal energy is proved to work in creating air pressure (and airflow ) beneath docks with sides reaching beneath the sea level; air pressure could be used in bubble pumps leading water to special storage
Renewable energy
Oil, coal, hydrogen, fuel cells, hybrid cars, renewables, geothermal, economical growth
Energy, oil and gas > Renewable energy
Travelers and hotels or travel site. Flights by vacation and cars.