Science & Technology

Technology may save us from shark bites

Electric shark repellent technology was first proposed in the 1990s based on a special short-range electrical receiving system that sharks call the Lorenzini organ. These jelly-filled pores in the nose (such as acne) can feel a weak electrical signal from nearby potential prey. Therefore, scientists used this sensitive sensation to devote money to creating an electric-field-creating repellent aimed at overwhelming the shark’s Ampullae of Lorenzini.

The science behind it looks simple-it creates an artificial electric field through electrodes immersed in seawater as conductors-but not all electric shark deterrents are equal. Most personal deterrent claims are “based on knowledge of shark sensory biology, rather than robust testing of the device itself, as most have not undergone independent scientific research.” Previously mentioned by researchers at the University of Western Australia.. The results regarding whether the device significantly reduces the risk of negative interactions with sharks depend on the commercial electric anklet shark deterrent you are talking about (eg,). Electronic shark protection system or ESDS Or these more positive results Shark Shield ™).

It is not surprising that many of the studies being conducted on these non-lethal solutions to protect individuals are from Australian universities. Australian shark attack file). Although current deterrence has not been completely greened by shark scientists, a new modeling study at Flinders University shows that proper use of personal electronic deterrence is an effective way to prevent future deaths and injuries. It states. In fact, these devices are estimated to be able to save the lives of up to 1063 Australians along the coastline over the next 50 years. “Whenever people are underwater, and as long as the technology is at work, these personal electronic deterrents can be used to kill, injure, and trauma from shark bites for the next half century. Avoiding it is a realistic result, “said lead author Corey Bradshaw. “Given that the government is applying multiple approaches to mitigate shark bites such as drones, SMART drum lines, and acoustic monitoring, our simulations show that electronic deterrence is valuable for overall mitigation. It suggests that it can make a positive contribution and help alleviate the fear of the community. “

A team led by Bradshaw analyzes shark bites per capita around Australia from 1900 to 2020, estimates the protective effect of water users wearing electronic deterrents, and predicts shark bites. We have developed a model that predicts how many times it can be avoided.Shark bites are a rare event – ​​according to You have 1 in 3,748,067 International Shark Attack Files Risk – However, the results show that electronic deterrence can reduce the likelihood of bites by about 60%.

Co-author Charlie Haveniers, who heads the Southern Shark Ecology Group at Flinders University, said electronic deterrents could be beneficial as long as people understand how much they actually reduce the risk of attacks. It states. “Several studies have shown that electronic deterrence can reduce the likelihood of shark bites, but device effectiveness varies between manufacturers and even between products from the same manufacturer. When testing a product scientifically, a number of interactions are needed (that is, using robust statistics) to confidently assess its effectiveness, “he explained. “As a result, it is often necessary to use food and barley to attract sharks, which can motivate sharks to bite rather than encountering swimmers and surfers. Therefore, the ability of electrical deterrents to reduce the risk of shark bites is greater than the 60% reduction observed in our study and may further increase the number of lives saved. “

Personal electrical deterrence may not be the answer that all shark researchers agree on, but perhaps different types of technology may help protect swimmers and surfers from sharks. Beach fans around the world are warning people about sharks that are too close to comfort when they see helicopters and drones deployed in some beach areas to detect surveillance. But what if the drone wasn’t just used to detect sharks, but repelled them? Researcher at the University of New South Wales Uses an “autonomous drone shark shield” that uses flying drones to prevent and prevent shark attacks through inflatable tubes that essentially drop electric shark repellents into the water when sharks are found Proposed. These drones have not been tested “in the wild” yet. […] Proven by computer simulation. “

Regardless of the technology used to protect us, marine users need to be very critical of shark deterrence claims as they can give someone a false sense of security. there is. Meanwhile, future studies will continue to investigate the behavioral responses of different shark species to determine species-specific differences in the effectiveness of these devices.

Technology may save us from shark bites

https:///sites/melissacristinamarquez/2021/03/30/technology-might-save-us-from-shark-bites/ Technology may save us from shark bites

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