The invention provides a tool (4) for cleaning surfaces subsea, comprising a body having a cleaning face (11) for holding against and preferably also moving along the surface to be cleaned, the face has a shape convex or corresponding to the surface to be cleaned, and a means for distance control of the cleaning face of the body such that a gap is provided between said face and the surface (3) to be cleaned when the tool is in operation, and/or openings or channels are arranged for allowing surrounding water to flow in towards the center of the cleaning face. Further, the cleaning face comprises a suction outlet for water, debris and contamination, in operation the outlet (13) is connected to a suction device (17) so that water, debris and contamination is drawn into the outlet for transport to further treatment.