Ian Whiteman, a fisherman in Largs Boat Harbour on the west coast of Scotland, is trialling LED light technology to reduce bycatch and improve efficiency. Devices from SafetyNet Technologies are being tested with cameras and sensors attached to the net, along with LED lights that can attract specific fish, while repelling creatures like dolphins. The World Wide Fund for Nature (WWF) has been working with fishermen around the world to trial the use of coloured LEDs as a way to minimize the chance of sea life becoming entangled. Green lights have been found to be the most effective at preventing turtles from being caught, but ideal light spacing is yet to be determined.
A research team from Arizona State University conducted a study with Mexican fisherman in the Sea of Cortez. It found that illuminated lights reduced the average bycatch by 63%, cutting down the time it took to retrieve and untangle nets by about an hour. The use of the lights is a “win-win” for the ocean eco-system and the fishing industry, says Alison Cross, director of fishery sustainability at the WWF.
Despite its success, some question whether the fishing industry will embrace the technology due to issues around affordability. Chief Executive of an Indonesian non-profit organisation that promotes greener practices, Akbar Digdo, is trialling SafetyNet lights with fishermen in West Java and believes coupling the technology with a financing mechanism is essential for more accessible use.
Whiteman also uses a Catch-Cam, a camera that attaches to the fishing net allowing him to see what is happening with the catch in real-time via an app, and Enki, a cheap, underwater data collection system that measures factors like pressure, depth and temperature. By combining these tools, Whiteman is able to maximize profits while minimizing bycatch.
Overall, the LED light technology and other data collection systems have shown great promise in enhancing efficiency, minimizing bycatch, and improving the profitability of fishermen worldwide. However, making the technology accessible to all must be a priority in order to prevent further damage to the ocean’s eco-system and maintain sustainable fisheries
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