Tides are the daily movements of large bodies of water caused by the attraction of the sun and moon on the rotating Earth.
Tides have a regular schedule, they rise and fall twice each day.
Tides can be effected by seasons and storms. Tides are lower in the winter and late fall when the sun's pull on the tides is not as strong. The energy of the tides comes from the rotational energy of the Earth. The gathering of tidal energy will not have an effect on the Earth's rotation The first known Tidal Power Plant was built in England 70 years ago. Tidal Generating Plants are being used in China, Norway, The Soviet Republic, Great Britain, The United States, Canada, Argentina and the Cambridge Gulf of Western Australia.