Ocean wave is a surface wave. It occurs at the surface of the ocean. Surface wave travels both parallel and perpendicular to the direction of the wave. The surface wave is neither transverse nor longitudinal wave.
Ocean wave is caused due to the motion of wind across the surface of water.
There is a friction between the water molecules and air molecules which causes energy to be transferred from wind to water.
Therefore, an ocean wave travels at the surface between air and water media.
