Unexpected interaction with everyday objects fascinates people, and many of the works have already been tried. However,
interaction with objects on water has not been explored much despite its proximity to life. We introduce "OREOREO," a motion display on the water. Through the OREOREO, we have implemented free two-dimensional motion on the surface of the water, enabling a comprehensive display of water and floatings on it. OREOREO enables various expressions such as text presentation, data visualization, dancing, and acting. As a demo installation, we created an audio station where users could interact through buttons to demonstrate possible scenarios and collect user feedback.