Thirty percent of the shark and ray species are threatened or near threatened with extinction. With a very low rate of reproduction, sharks can not survive the estimated 100 million that are killed by people every year due to commercial and recreational fishing.
Sharks have roamed the oceans since before the time of dinosaurs. They have been the super predators of the sea in nearly every part of the ocean for over 420 million years. Because of humans, their long reign at the top of the ocean food chain may be coming to an end ballenas.
The onset of industrial fishing over the past sixty years has drastically depleted shark populations. The biggest reason for overfishing is shark fin soup, which has become very popular in Asian countries. Fishermen capture live sharks, cut off their fins and then dump the finless animal back into the water where it will soon suffocate or succumb to predators. Even with some recent regulations in effect, poachers continue to illegally fin millions of sharks each year.
People are learning that sharks are not the monsters that popular movies, like Jaws, made them out to be. Shark attacks on humans are rare and very few are fatal. People would be surprised at how close sharks are to them as they swim in the ocean during a day at the beach. The sharks know you are there, they are simply not interested. Knowingly and unknowingly, people swim with sharks all the time and are safe. If you stumble across a lion while taking a stroll through the jungle, you are not likely to make it out alive. Yet people see sharks as cold-blooded killers and view the lion as a magnificent beast.
A shortage of sharks would be disastrous to the health of ocean food chains, including the ones we rely on for food resources. Sharks eat the weak, sick and dead fish, keeping the populations of other fish healthy and in proper proportion for their ecosystem.
One thing many of us have in common with the octopus is that we love to eat lobster. Sharks love to dine on octopus and that keeps the octopus from overpopulating and wiping out all the lobster. Imagine going to the market and not being able to find bay scallops, lobster or any other shellfish.