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Significantly Less By-Catch in Fishing Nets with UV LEDs

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Significantly Less By-Catch in Fishing Nets with UV LEDs

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Scientists at the University of Hawai’i have developed a method to significantly reduce the by-catch of turtles. In an experiment, UV-LEDs with a wavelength of 396 nm were applied to the nets at intervals of five meters. The result was immediately visible. The by-catch of sea turtles was reduced by approximately 40 percent. At the same time, the researchers noted that the amount of fish caught was not affected by the UV radiation. Economic objections do not appear to exist with this method. Experiments with green LEDs and other light sources led to similar results. In addition to acoustic signals that deter marine mammals, the LEDs could also soon be part of the so-called “intelligent fishing nets,” which are designed to combine species protection and commercial fishing.

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