Environmentalists have criticized the seaside swimming pool for using a net to separate the swimming area from the sharks. Because every year, this kind of net needlessly kills thousands of marine life. Recently, environmentalists have found that if the cable is buried under the swimming area, the shark will swim away automatically, so that it will not hurt people or marine life. 
Although many people claim to be afraid of sharks, tourism in shark-infested areas is not much affected.
 after installing this kind of cable, the swimming area can not only maintain tourism, but also meet the requirements of environmentalists.