A skimming and separation device comprising an outer casing (1) provided with constructions to directly or indirectly fasten all parts, including a number of inflow tubes (20), and defining a closed container (19). The device comprises a floater (5) configured to create the skimming function of the device, the floater is attached at its lower side to an essentially vertically arranged bellow (23) allowing the floater to adapt flow into a substantially circum volume that is allowing flow in a downward direction into the inflow tubes (20)that allow debris and floating pollutions to enter below the accumulated debris and floating pollutions to preferably sett the internally fluid inside the casing (27) in horizontal circular rotational motion as a result of a power device (7), e.g. an electric motor, with a propeller, wherein said power device is controlled by a control unit, wherein said power device is configured to be controlled such that various kinds of flows and pressures may be generated to control the in-flow and out-flow of the device.A central plattform (21)and or an outflow tract with a discharge tube(26)that directly or indirectly is connected to a fourth valve (30)(vf4)arranged in communication with an upper part of the container, said fourth valve is adapted to create a one way valve function, wherein said fourth valve prevents flow into the container and allows flow out from the container to said discharge tube (26). A second or third valve (vf3) arrangement that prevents pressurized reversed flow generated by the power device (7) to pass through the inflow tube in order to generate high pressure gradients over the entire collection of debris and floating pollutions towards the outflow tract with the discharge tube(26)