In Physics a wave is a disturbance that travels through space and time, usually accompanied by the transfer of energy. Many waves in the water are actually classified as Wind Waves. Wind Waves are surface waves that are generated by the wind blowing over a fluid surface. There are three different types of wind waves: ripples, seas and swells. Ripples are waves that die as soon as the wind stops blowing they are propagated by surface tension. Seas come from sustained wind and continue after the wind dies. Seas are propagated by gravity. As seas move away from their origin they separate by direction and wavelength. The wave motion created by this process are called swells.