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A 40-year-old male tourist was swimming and filming about 100 meters away Beach in Hadera off the coast of Israel in April when he was suddenly surrounded by a dusky shark, a species generally considered harmless to humans.
The testimony of witnesses shows that Reportedly jumped by the shark On his GoPro camera. Witnesses heard him shouting: “Help…they’re biting me”, before he disappeared from sight as the water turned red and some shark fins could be seen on the surface. According to local reports, by the time rescue boats arrived, the water was covered in blood and the man was gone.
“A day later, the search at sea went well human remains (in very small quantities) that allowed forensic confirmation of the victim’s identity, but also led to the conclusion that he was consumed by ‘multiple’ sharks during this incident,” the researchers wrote.
report, published in magazine ethicsDocuments the first known example of dusky shark – a species of which there are no known records kill humans – Fatal attack on a diver while feeding.
Researchers have linked this extremely rare attack to a combination of several factors, including human error, ecological degradation and the animals’ propensity to go into the midst of a feeding frenzy.
While dusky sharks are large and seem like impressive predators, growing to about 3 meters (10 ft) in length, they are generally shy and wary of people.
The sea near Hadera, Israel, has attracted large numbers of these sharks due to the warm water coming from desalination plants off the coast.
Additionally, human feeding of these sharks, as well as the abundant dumping of food waste in the area, has helped to attract more dusky sharks, dozens of which flock to the area each winter.
Local boat operators catering to tourists have also thrown pieces of fish into these waters for customers to keep the sharks away.
Scientists explain that these factors together have led sharks to associate humans with food, and they have developed a new behavioral pattern called “begging.”
Many sharks have been observed swimming directly towards divers, sometimes even colliding with them, in search of a quick food delivery.
Careful examination of images taken from the scene revealed that the sharks were likely dusky sharks based on the size and shape of their dorsal fin.
Scientists believe that dusky sharks display frenzy behavior when feeding due to the competitive feeding environment created in these waters.
“Competition for access to food resources dominates the normal behavior of the species, including the intrinsic non-innate nature of (human) hunting,” they wrote.
“This condition is likely to have arisen through a process of conflicting bites, with two different motivations: first, a (possibly single) reflex/clumsiness bite, which is motivated by begging for food, and second, multiple violent bites that arise from a feeding frenzy,” the researchers explain.
He says the solutions that can be adopted to prevent such incidents in the future are “simpler and more effective” than the classic fatal shark bite case of a known deadly species like the tiger shark.
The scientists write, “The main objective is to eliminate begging behavior in sharks, and this can only be achieved by establishing and enforcing a complete and total ban on all artificial feeding of sharks by the public.”
“Any other measures may be complementary, but undoubtedly less relevant from this perspective,” he concluded.