'Visual alerts for gillnets - other' captures means of improving the visibility of nets, other than by acoustic or illumination methods. Examples include net colour, reflective net elements, high contrast and patterned nets.
There is limited research into the application of these techniques in tuna fisheries; results from other fisheries have been collected, particularly for seabirds.
References
Sacchi J (2021) Overview of mitigation measures to reduce the incidental catch of vulnerable species in fisheries. General Fisheries Commission for the Mediterranean. Studies and Reviews No. 100. FAO, Rome