This form of energy is produced when the electricity generators are placed on the surface of the ocean. The energy is widely applied for the desalination purpose in the power plants and water pump. Output of the energy is calculated by the wave height, wave speed, wavelength and the water density. Energy generated by waves is converted into electricity through the electric generator. Wave movement is harnessed and converted to electricity. It’s a reliable source of energy as it can be harnessed enormously and there is no shortage. Depending on the method used for the capture of wave energy, it can be characterised into hydraulic ram, elastomeric hose pump, and pump to shore, hydroelectric turbine, air turbine and linear electric generator. Being a renewable source of energy, wave energy can have certain disadvantages to the marine animals. There are chances that the marine animal may be struck to the tidal turbine blades, causes noise pollution, effect on the life of marine animal, affecting the sediment transport and water quality.