The mysterious attacks of sharks

Scientists are trying to find an explanation for a series of mysterious shark attacks in different countries recently.

Last week, information about the attacks of shark attacks killed people on the mass media. A British man on his honeymoon was killed by a shark in Seychelles in front of his mate's horrified eyes. In Russia, sharks killed a 6-year-old boy; 1 day earlier, a man lost his forearm when he tried to protect his wife from a ferocious shark. A woman on vacation in Puerto Rico is attacked by sharks while swimming in the bay for tourists in the Vieques area of ​​the island nation. In total, at least 6 people died and 7 were injured in recent shark attacks.

Sharks caught in Central Vietnam waters - (Photo of Dinh Phu)

According to experts, there are many reasons for the mass attacks of sharks, and they all involve humans. First, it is possible that people tend to adventure in places where there was no previous presence of them. According to the Florida Museum of Natural History Museum, the increase in the number of shark attacks does not mean that the fish is suddenly more aggressive than before, but only reflects human tendency. Increasing the time of immersion in the sea, which increases the risk of clashes with sharks.

According to a wildlife expert, sharks that attack off the coast of Russia could be caused by warming waters in the southern region under the impact of climate change . 'Sharks can migrate there by fish populations or squid,' says World Wildlife Conservation expert Konstantin Zgurovsky with FM Kommersant radio. Expert Amy Wilkes of Sydney Aquarium (Australia) said that it is possible to perpetuate attacks in Russia and Seychelles not as ' immigrant ' sharks , but on-site creatures ' who can live in those Different temperatures'.

Meanwhile, expert David Jacoby of the Marine Biology Association in Plymouth (UK), offers local causes for shark attacks. He mentioned five consecutive attacks in just one week at the Egyptian resort Sharm el-Sheikh in December 2010. The reason is that a cattle carrier passing the area threw dead sheep into the sea and local travel companies raised sharks to attract visitors.

Another reason that has not been assessed is the impact of overfishing on shark behavior.'We know these animals are opportunistic, and they come to where the food is available. This resource moves, and sharks depend on water streams that carry nutrients, ' an expert said. According to him, not all sharks, but all marine predators, are attracted to places where food sources are available.