To specifically mitigate 'Israf' (wastefulness) in a trawling operation, what advanced technical modification to fishing gear is primarily employed to achieve significant bycatch reduction?

To specifically mitigate 'Israf', which means wastefulness, particularly the waste of marine resources in a trawling operation, the primary advanced technical modification to fishing gear employed for significant bycatch reduction is the excluder grid. Trawling is a fishing method where a large, funnel-shaped net, called a trawl, is towed through the water to capture fish. Bycatch refers to the non-target fish and marine animals unintentionally caught during this process, which contribute to waste when discarded. An excluder grid is a rigid or semi-rigid panel, typically made of parallel bars, installed inside the trawl net, usually in the section immediately before the codend, which is the collection bag at the net's end. As water and captured organisms flow through the net, the grid physically separates marine life based on size, shape, or behavior. Target species, generally those of a specific size that can pass between the grid bars or are directed by the grid, are funneled towards the codend. Non-target species, such as smaller fish, juvenile fish, or larger animals like marine mammals or turtles (in the case of a Turtle Excluder Device, which is a specific type of excluder grid), encounter the grid. They are then guided by the angled grid towards an escape opening or chute built into the net, allowing them to exit the trawl safely and return to the ocean. This mechanism effectively reduces the capture of unwanted organisms, thereby directly addressing the 'Israf' of marine life by preventing its waste.