A pelagic trawl door for remote-controlled adjustment under water of the active surface area of the pelagic trawl door, wherein: - the pelagic trawl door comprises an upper surface portion and a lower surface portion disposed on either side of a central axis of the pelagic trawl door; - said upper surface portion comprises three successive, parallel and partially overlapping panels (14a, 16a, 18a) which are fixed to a side profile at their free ends; - said lower surface portion comprises three successive, parallel and partially overlapping panels (14b, 16b, 18b) which are fixed to a side profile at their free ends, and - the two surface portions have a hydrodynamic shape, characterized in that: - the two surface portions are disposed on either side of a tube formed about the central axis of the trawl door, said panels (14a, 14b, 16a, 16b, 18a, 18b) extending out from the central tube and transversely to the central axis of the pelagic trawl door; - each surface portion is provided with an opening (10a, 10b) adjacent the free end of a middle panel (16a, 16b) with an associated, movable damper (12a, 12b) being structured in a manner allowing it to be moved, completely or partially, over the opening (10a, 10b) for individual adjustment of the active surface area of the surface portion; - wherein the damper (12a, 12b) of each middle panel (16a, 16b) is structured movable along an axis extending transversely to the central axis; - wherein each damper (12a, 12b) is movably connected to a driving device (28a, 28b) connected to the pelagic trawl door; and - wherein the central tube is provided at least with a remote-controlled communication and control means for individual operation of the driving device (28a, 28b) of each damper (12a, 12b). - the pelagic trawl door comprises an upper surface portion and a lower surface portion disposed on either side of a central axis of the pelagic trawl door; - said upper surface portion comprises three successive, parallel and partially overlapping panels (14a, 16a, 18a) which are fixed to a side profile at their free ends; - said lower surface portion comprises three successive, parallel and partially overlapping panels (14b, 16b, 18b) which are fixed to a side profile at their free ends, and - the two surface portions have a hydrodynamic shape, - the two surface portions are disposed on either side of a tube formed about the central axis of the trawl door, said panels (14a, 14b, 16a, 16b, 18a, 18b) extending out from the central tube and transversely to the central axis of the pelagic trawl door; - each surface portion is provided with an opening (10a, 10b) adjacent the free end of a middle panel (16a, 16b) with an associated, movable damper (12a, 12b) being structured in a manner allowing it to be moved, completely or partially, over the opening (10a, 10b) for individual adjustment of the active surface area of the surface portion; - wherein the damper (12a, 12b) of each middle panel (16a, 16b) is structured movable along an axis extending transversely to the central axis; - wherein each damper (12a, 12b) is movably connected to a driving device (28a, 28b) connected to the pelagic trawl door; and - wherein the central tube is provided at least with a remote-controlled communication and control means for individual operation of the driving device (28a, 28b) of each damper (12a, 12b).