Australian researchers have discovered that LED lights on the bottom of surfboards and kayaks might help reduce shark attacks.
By using seal-shaped decoys with lights, the team found that the lights confused great white sharks, making them less likely to mistake the decoys for food. The findings could lead to safer surfing and water sports in the future.
The study, conducted by Macquarie University scientists, showed that the bright lights disrupted the sharks’ ability to see dark silhouettes against the sunlight. Sharks often rely on these shapes to identify prey like seals. By changing the silhouette to a bright, glowing shape, the researchers reduced the number of shark attacks on the decoys.
Dr. Laura Ryan, the lead scientist, explained that great white sharks have poorer vision than humans and often confuse swimmers or surfers with their natural prey. The brighter the light, the more effective it was at deterring the sharks.
The study took place in Mossel Bay, South Africa, and involved towing lighted decoys behind boats. While covering an entire surfboard in lights worked well, it wasn’t practical. Strips of LED lights were tested and found to have a similar effect, making this a promising option for real-life use.
Dr. Ryan and her team are now testing surfboards with built-in lights. They are also studying whether these lights could deter other shark species and if stationary objects would have the same results. If successful, this innovation could help prevent shark attacks and make ocean sports safer for everyone.
