Robotic Net Cleaning Systems

Robotic net cleaners, generally tracked or wheeled units that crawl along a submerged net surface using high-pressure water jets or rotating brushes to remove biofouling, have substantially displaced diver-performed manual net cleaning on larger commercial cage operations specifically because robotic systems can clean more net area per hour with lower labor cost and without the diving safety exposure, decompression risk, entanglement hazard, that manual cleaning requires. Cleaning intensity and brush or jet pressure must be calibrated to avoid damaging net material or structure, since overly aggressive cleaning can weaken net fibers or dislodge anti-fouling coating faster than normal wear would, meaning cleaning robot operating parameters are typically set specifically for the net material and mesh type in use rather than applying one universal cleaning intensity setting across every net on a farm regardless of its construction. Removed biofouling material, rather than being released as a cloud of dislodged organisms and organic debris directly adjacent to the farm, is increasingly captured or contained during the cleaning process in more advanced systems, addressing both the biosecurity concern of spreading fouling organisms, parasites, or pathogens to nearby water and the water-quality concern of the sudden organic load that uncontained dislodged fouling material would otherwise add to the immediate area. Operating schedule and frequency depend on fouling growth rate at a given site, which varies seasonally and regionally, so cleaning robots are typically deployed on a condition-based schedule informed by fouling monitoring rather than a single fixed calendar interval applied uniformly regardless of actual accumulated fouling at any given time.