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Research on shark nets
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Underwater shark nets make us feel safer at the beach,but are we? That’s the question. Are we safe? There are lots of possibilities that the shark, with sharp like knife teeth, may outsmart us. Because of shark attacks we use nets, called shark nets. However, that doesn’t mean nets used in the past prevented shark attacks. These nets don’t only trap sharks they trap other sea creatures. In particular shark nets, which are often too small to catch sharks, are not effective. Scientist, Laurie Laurenson, from Australia said these nets don’t work because sharks continues to attack people along the beach. As a matter of fact, these nets are only one kilometer long which equals one and a half miles in length. A shark can just quickly swim around the net. In fact, these shark can …show more content…
So therefore, Drum-lines don’t help prevent killer sharks from attacks. Most of all, the sharks they catch are tiger shark which are less dangerous than great whites. All the ways,that they came up with don’t only trap sharks they trap other sea life. Furthermore, you are trapping other animals that don’t even hurt humans and may be causing a Species to come Extinct by the sharks net. Nevertheless, the drum- lines program with hooks like needles is working even though sometimes it’s a false call but it is keeping every one safe so far. In my opinion, I think that the main reason there is shark attacks because of crowded beaches. I think that because there is so many people in the water that you can’t sea your surroundings. In conclusion, shark nets do work and they don't. Scientist might find a way to prevent shark attacks with shark nets or in the feature they might find different ways. Or scientist may invent a way that will only prevent shark attacks and won’t kill any other sea life. To sum up, they need to do some thinking and protect the sea, which is great for sea life, and it is great for the
Fishery Scientist are constantly working on ways to protect shark species and reduce shark bite incidences. Others have proposed that sonar waves are placed on nets to try and keep sharks away. Researchers are also collecting data from the sharks that are caught by the fishermen to be in a position to better understand sharks, and how we can live in unity with them. A shark tagging programme to try to better understand shark movements and patterns could also assist instead of culling. Statistics show us that there have been drastic reductions in fatal shark bites since nets have been installed in NSW and Qld.
So why do we need sharks? Well, Sharks help keep the ocean healthy and clean for over 450 million years. They also help remove half of the worlds green house gases and produces oxygen more than all of the rainforest's combined! Sharks are just as important as all the trees in the world because they have one thing in common, provide us with oxygen. Without the sharks help we wouldn't be able to get rid as much of the greenhouse gases as we want to, which means global warming would have a lower rate of happening faster. Most importantly they provide us with food. How? They would usually eat the old, sick or slower fish in the population of the ocean to the right size so the prey species don't cause harm to ecosystem by becoming to populated. They are also at the top of the food web. If all the sharks went extinct the entire food web would collapse causing many other species of fish to disappear. So instead of killing the sharks, we could lure them away to somewhere else. As they have a huge impact to the environment.
As they are at the top of the food chain, sharks play a very important role in the oceans in a way that an average fish does not. Sharks keep populations of other fish healthy and in proper proportion for their ecosystem. By preying on the old, sick or slower fish in a population, they prevent the spread of disease and prevent outbreaks that could be devastating. According to Ransom Myers from Shark savers, “sharks may be gone within the next decades if we continue to kill them, resulting in the loss of important foods that we depend on for survival, causing a marine ecosystem imbalance.” At the same time, I accept that shark nets could be useful, especially in shark infested areas that have been renowned as spots where many attacks have occurred, but I still believe, as you would, that scientists should spend more resources on working out why it is becoming more common for sharks to be entering shallower waters, looking for food – namely seals, who just happen to look like
One of the governments main reasons for culling the sharks is because they are coming in too close to the shores and becoming a potential threat to swimmers. But why is this happening? This is due to a change in shark feeding habits, but because they are eating more human of course not! Rather because us humans are over fishing and eliminating the fish/food sources of which sharks normally feed on. This is forcing sharks to come in closer to find food. Us as humans have forced sharks to come in closer and are now killing sharks because of our a...
Kish, P., 2012. Most Shark fishing is now banned from beaches and jetties in a year-long trial. [Online]
Shark nets have been implemented in locations across the world in response to shark sightings and attacks. Nets are submerged beneath the surface of the water, roughly 200 metres from the shoreline. The meshing is designed to be large to capture sharks, leaving them to struggle before eventually drowning under the weight of their own body. The meshing allows small fish to pass through, however captures larger fish and marine species. Shark nets provide no discrimination between common, vulnerable and endangered species, resulting in a high mortality rate for a variety of marine wildlife.
This negotiation quickly goes haywire when an immense storm approaches the ship, resultantly abducting the thousands of sharks out of the ocean and into the sky, later transporting them to southern California. Firstly, the sudden presence of the storm in which the ship crew asked to simply “go around” is scientifically inaccurate because weather does not change so drastically in such a short period of time. Rather, large storms such as the “sharknado” need to build over time. Also, the realistic threshold for a waterspout is much smaller than is portrayed in the film.
In the book “Great White Sharks” by Peter Benchley, he says that they are not villains but victims in danger of extinction. Have you ever seen a great white shark and it had scars near its gils? Well that is what happens when two sharks meet. They are actually being friendly. Back then it used to be okay to decimate animals. They used to think that great whites were infinite in number. They also thought that Great whites attacked boats. A great white's sensory system can detect movement, sound, and electrical fields caused by metal and motors. When a shark is approached by a boat it wants to investigate by biting it to see if it is food. Great white sharks are the most feared sharks but should not be feared as
...s. According to studies and statistics done, you are more likely to be struck by lightning than killed by a shark. They are often misinterpreted as scary and violent creatures, however this is merely due to media. Shark based films such as Jaw show that these sharks are harmful when they really aren't. Tapes/recordings of sharks slaughtering humans are published so often because of its actual unusualness.
In 2015 only 59 shark attacks have occurred around the world compared to the millions of sharks killed by humans every year. Due to these accidental shark attacks people tend to think that sharks, especially Great Whites are evil creatures with malice intentions when attacks do occur; but, on the contrary that is wrong. Sharks are not the only beautiful and unique creatures in the ocean, they also play a vital role in our ecosystem; however, due to human interference they might not be around much longer, through awareness sharks can be protected from endangerment.
These animals have are at severe disadvantages relating to population growth, “One of the things we forget is that sharks differ from other fish. They do not lay thousands or millions of eggs. Many sharks take up to fifteen years to reach maturity and then produce only one shark pup per year”(Shark).Such a fragile and slow reproduction rate means that populations may never recover from the damage we have already inflicted. The shark finning operations are barbaric and sets precedents that something so cruel can be turned a blind eye. The continued operations will lead to mass extinction of not only sharks but entire ecosystems that cannot sustain, which will lead to economic collapse for multiple countries that depend on the ocean.
Hundreds of people, who get in the ocean every year, are almost none that encounter sharks. Even if you're lucky enough to see a shark big enough to bite you, you're much likely to die from a heart attack than getting bit by one. Shark attacks are mistakes and the idea of a shark off every beach waiting for people to come in the water is completely untrue. I will inform you on the background knowledge of sharks and the reasons why humans should not be afraid only aware.
In conclusion, sharks should be respected and not feared, many of the reasons that there have been an increased amount of shark attacks is the amount od people going to the beach increasing, mistaking people as seals, and divers being disrespectful. And remember, “ Nothing has pre-pared sharks’ squid’ krill and other sea creatures for industrial-scale extraction that destroys entire eco systems while targeting a few species” Sylvia Earle.
The sharks attacks has been a worrisome issue in new zealand, This problem lies on the warming of the water because shark attacks has occurred more than usual,Although shark attacks occur there are two side of this argument, for example killing sharks is a good thing to the citizens because there have been harmed or hurt by the sharks , but some people have an opinion like marine biologists think its not fair and disagree how the humans kill 100 million sharks per year and death by sharks is around about is 4 in per year and back my information up I think that the real villain is humans. For every one human killed by a shark, there are approximately 25 and thats just a approximate (http://oceana.org/)
Shark diving has come long way since its beginnings. It has led to new discoveries of creatures we still know so little about. Giving the common people a way to see a creature that’s feared, face to face, has opened up the minds of many. However, like many other things humans have become a part of, if man does not cherish and cautiously care for this gift we have we will ultimately lose and destroy it. Shark diving is an amazing way to open a person’s mind, but do not let your mind open ignorantly. Respect the shark and its surroundings and instances of injury or harm to you and the shark will not be a concern. Explore, takes risks and dive into a world that is wondrous, however, proceed with caution and take care to learn of the world you are entering.