Shark Attacks Deterrent: How LED Lights Can Help Surfers

  • WorldScope
  • |
  • 12 November 2024
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Innovative Approach to Shark Deterrence Using LED Lights

In a groundbreaking study, Australian researchers suggest that attaching LED strip lights to surfboards could significantly reduce the risk of shark attacks, particularly from great white sharks. Conducted in Mossel Bay, South Africa, this research sheds light on an innovative method of enhancing safety for surfers and water sports enthusiasts.

Study Overview and Key Findings

Researchers from Macquarie University devised an experiment where they towed seal-shaped decoys equipped with various LED light configurations behind a boat. The objective was to determine which setup attracted the most attention from great white sharks.

The study revealed that the lights modified the silhouette of the decoys against the ocean’s surface, making it harder for sharks to distinguish between their targets and the surrounding environment.

The bright lighting proved effective in limiting visibility against sunlight, providing a potential non-invasive alternative to traditional shark deterrent methods like nets or drones. Lead researcher Laura Ryan emphasized that great white sharks are responsible for a majority of fatal shark bites and often attack by approaching from below. This behavior can lead to confusion, with surfers' silhouettes being mistaken for seals.

The research further aims to investigate whether this LED technology can also deter other shark species known for aggressive behavior towards humans, such as bull sharks and tiger sharks.

Statistics and Implications

Statistics indicate that in 2023 alone, there were 69 unprovoked shark bites worldwide, with 10 resulting in fatalities. Most incidents occurred in regions like the United States, Australia, and South Africa, particularly among individuals engaging in surfing or board sports.

The study, published in Current Biology, tested three different intensities of LED lights. It was found that horizontally aligned lights with higher brightness levels were less appealing to sharks.

This finding contradicts previous research suggesting that some shark species are attracted to bright objects. Researchers noted the significance of maintaining a dark silhouette against a lighter background in influencing predatory behavior.

Moving forward, the team plans to create prototype lighting strips specifically designed for surfboards and kayaks, marking a promising step towards enhancing safety for water sports participants.

As interest grows in shark conservation and human safety alike, this innovative approach could pave the way for new technologies aimed at reducing shark-related incidents while allowing humans to enjoy ocean activities responsibly.

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