Wave generation refers to the process by which waves are created in a medium, such as water or air. In oceans, waves are primarily generated by the wind, which transfers energy to the surface of the water. The strength and duration of the wind, along with the distance it travels over the water (called fetch), influence the size and power of the waves produced. In addition to wind, waves can also be generated by other factors, such as seismic activity, which creates tsunamis, or by the gravitational pull of the moon and sun, leading to tidal waves. Understanding wave generation is essential for various fields, including oceanography, meteorology, and coastal engineering.