Abstract: A wave-generating apparatus that is used for various types of surfriding water sports, such as body-surfing, boogie-boarding, and belly-boarding and is defined by a horizontally positioned, rotatable, cylindrical housing cradled in a frame structure, wherein a suitable amount of water is contained within the housing by means of end caps member that define a reservoir within the cylindrical housing, whereby a continuous wave pattern is formed in the stored water as the tube is rotated about its horizontal axis.