For an Energy Source, Look to the Sea

Two common ways ocean power can be harnessed are Tidal Range turbines, and Tidal Current turbines. In the range version, a dam is constructed to use the difference in the height between high and low tides using bidirectional turbines. In the current version, unidirectional turbines rather like windmills are used to tap the energy of underwater currents.

#-Link-Snipped-#