A device for cleaning and polishing connections of underwater equipment comprising a cleaning fluid dispersal mechanism, additionally comprising: a connection element adapted to be connected to a torque-generating device; a cleaning fluid discharge device comprising at least one reservoir of cleaning fluid; and a cleaning element connected to the discharge device through a support to the cleaning element,) in which the support to the cleaning element comprises at least one channel that fluidly connects the at least one reservoir of cleaning fluid to the cleaning element, in which the device comprises a system to control dispersal of cleaning fluid, characterized in that the system to control dispersal of cleaning fluid comprises a telescopic shaft that comprises a fixed part and a movable part, adapted so they move longitudinally in relation to each other, in which: the movable part extends at least partially to the interior of the fixed part: the fixed part is secured to the fluid discharge device, and the movable part is secured to the cleaning element; a compressible damping element is provided between the fixed part and the movable part; an upper portion of the movable part extends partially to the interior of the fluid discharge device, through an opening in the fluid discharge device; the channel that fluidly connects the at least one reservoir of cleaning fluid to the cleaning element extends longitudinally along the movable part, and it comprises at least one lateral opening in an intermediate area of an upper portion of the movable part. a connection element adapted to be connected to a torque-generating device; a cleaning fluid discharge device comprising at least one reservoir of cleaning fluid; and a cleaning element connected to the discharge device through a support to the cleaning element,) in which the support to the cleaning element comprises at least one channel that fluidly connects the at least one reservoir of cleaning fluid to the cleaning element, in which the device comprises a system to control dispersal of cleaning fluid, characterized in that the system to control dispersal of cleaning fluid comprises a telescopic shaft that comprises a fixed part and a movable part, adapted so they move longitudinally in relation to each other, in which: the movable part extends at least partially to the interior of the fixed part: the fixed part is secured to the fluid discharge device, and the movable part is secured to the cleaning element; a compressible damping element is provided between the fixed part and the movable part; an upper portion of the movable part extends partially to the interior of the fluid discharge device, through an opening in the fluid discharge device; the channel that fluidly connects the at least one reservoir of cleaning fluid to the cleaning element extends longitudinally along the movable part, and it comprises at least one lateral opening in an intermediate area of an upper portion of the movable part. the fixed part is secured to the fluid discharge device, and the movable part is secured to the cleaning element; a compressible damping element is provided between the fixed part and the movable part; an upper portion of the movable part extends partially to the interior of the fluid discharge device, through an opening in the fluid discharge device; the channel that fluidly connects the at least one reservoir of cleaning fluid to the cleaning element extends longitudinally along the movable part, and it comprises at least one lateral opening in an intermediate area of an upper portion of the movable part.