Laser Cleaning System

Laser cleaning systems represent one of the newest approaches to aquaculture anti-fouling. The concept uses a focused laser beam — typically a fibre laser at 1064 nm — to rapidly heat and vaporise fouling organisms from net surfaces without physically contacting the mesh. The beam is scanned across the net by a robotic arm or guided optics head, ablating barnacle shells, hydroid colonies, and algal mats while leaving the underlying net material largely undamaged. Several prototypes have been trialled in Norwegian and Scottish salmon farms since 2020.

Early results are encouraging for precision. Unlike rotating disc cleaners that can abrade net fibres, laser ablation removes fouling with minimal mechanical stress on the mesh. There is no chemical discharge, and the vaporised material disperses at negligible concentrations compared to the plumes generated by conventional mechanical cleaning methods. The technology handles hard foulers like acorn barnacles particularly well — the thermal shock shatters their calcareous base plates in milliseconds.

The barriers to adoption are significant, however. Processing speed is slow relative to established cleaning machines: current prototypes take 3-5 times longer per net panel. Capital costs exceed EUR 500,000 per unit, putting them out of reach for all but the largest producers. Calm sea conditions are required for the optics to maintain focus, which limits operational windows on exposed Atlantic sites. The technology is best understood as a future option worth monitoring rather than a near-term replacement. Track its development alongside other emerging methods on the comparison page, and use the cost calculator to benchmark laser cleaning projections against your current fouling management expenditure.