In this series, the wave is referred to as an artist's journey through the Sahara. Various feelings can be felt during the journey. There are different surface colours and effects, as well as vibrations from various directions. A wave is a disturbance on the surface of a liquid body, such as the sea or a lake, in the form of a moving ridge or swell. any surging or progressing movement or part resembling a wave of the sea: a wave of the pulse.