In Hemingway's novel "The Old Man and the Sea", the old fisherman spent all his hardships in the sea and finally killed a big fish and towed it to the stern to be transported back. Unexpectedly, I met a group of sharks on the road and chased him. In the end, although the old fisherman's life was saved, the fish he caught had been eaten up by the sharks.
In such a situation, what can be done to drive away these ferocious and dangerous gluttons from the sea? There is a good way, and that is to use decay extracted from dead sharks to drive them away.
Many animals, including humans, can't stand the stench of rotting corpses of their companions, so when they smell of dead bodies, they stay away. Sharks are no exception. A shark prevention company in New Jersey, USA, has been developing preparations for repelling sharks for five years. They tried all kinds of materials, but they didn't work well. Although some preparations can chase away the sharks temporarily, they will come back soon afterwards.
Finally, they heard some stories of the sailors, which said that when the living sharks saw or smelled the dead sharks, they would avoid them far, so they thought of using the dead sharks to drive the living sharks away. Researchers extracted decay from dead sharks and stuffed them in cans. When they encountered sharks while sailing at sea, they splashed these foul-smelling decays into the water. Indeed, this trick was really effective. Once the shark smelled the odor of his companion's dead body, he couldn't stand it anymore, and escaped, never showing up again.
