Why Do Sharks Cause The Extinction Of Marine Ecosystems?

This is true because you may think that sharks are everywhere in the ocean. This is not true. They are sometimes found in an unusual place, but this is because with us taking over their habitats, and polluting them where else can they go? We have all of the lands, but we also take over the ocean, home to many sea creatures. That just makes us selfish. We can’t get mad at sharks when they would be perfectly fine if we just left them and their home alone.

Firstly, if sharks numbers drastically decline then it will throw the food chain out of whack. Sharks eat the big fish, who in turn eat the smaller fish, which eat the smaller fish which eat the algae. If sharks were to become extinct then certain marine groups would overpopulate which would endanger a large number of other marine species making them either very rare or even extinct. “According to one study, without sharks the number of mid-level predators will increase many fold. These mid-level carnivores will eat most of the algae eaters. As a result, the seas will be choked with algae and its excretions. The water will become slimy. Sunlight penetration will be reduced. It will decrease coral reefs very soon. So, many thousands of dependent species will also go extinct.” (All Five Oceans, 2016) For example, do you like to eat shrimps, oysters or crabs? Because if shark culling continues then these species will become almost extinct. This is because sharks feed on rays who are the main feeders of these foods, if sharks become extinct then rays will overpopulate and with so many rays feeding on these foods then they will become rare and maybe even extinct.

One of the major problems is shark finning. Shark finning is the practice of removing the shark’s fins after it has been caught. They keep the fins and the body is usually thrown back into the sea, and usually the shark is still alive when this happens. When this is done sharks are not able to swim, and eventually the shark dies from suffocation, blood loss or being eaten another predator. The reason why the fins are kept are because shark fins are one of the most expensive food items in the world and can be worth more than over $400 per kilogram. One of the problems with finning and the selling shark fins is that it has caused a lot of declines in shark populations. Shark finning is unmonitored and unreported so the actual amount of finning is unknown. Finning is done at random and unbiased, they go after any species, sex or size of shark. Research has been done on some of the fins brought in by fisheries and it shows that even fins from great white sharks are appearing in shark fin

Overfishing is a death sentence to the world’s oceans. As technology continues to improve a great deal of fish can be caught quicker; but at what cost? The effects of overfishing can lead to the extinction of not just the animals being fished, but also the predators that rely on fish to eat. Ninety percent of the ocean’s largest animals have been wiped out due to overfishing (“Overfishing- A Global Disaster”, 2011). National Geographic cites the academic journal Science (2006) that predicts by 2048, all fisheries will collapse due to lack of ocean wildlife. Fish are not the only animal caught in the nets used by fishing vessels. Often animals such as dolphins, sharks, turtles, and seabirds are

Every Jaws fan knows the shark gets it in the end. What they do not know is that too many sharks have gotten it; and that has caused a rapid decline in the shark population over the past thirty years. Since the 1970's, sharks of the Atlantic and Gulf of Mexico shores have declined eighty-five percent. Sharks are vital animal to our world's ecosystem, and if the decline is not controlled; we could be facing devastating problems in years to come. Information has been obtained from two books: The Shark Almanac by Thomas B. Allen and Sharks, An Introduction for the Amateur Naturalist by Sanford A. Moss. Sources also include a number of online references, among them BBC News, ENS News, The New York Times, and two online scientific

Arising over 350 million years ago, the shark species has been labeled as a human devourer. Now, with the increase in human population, the demand for shark meat, fins, and cartilage are at an all time high; therefore, the existence of the shark is becoming a concern (Budker 1971). Individuals are conditioned to think of sharks as a negative aspect to the environment, which is prolonging the effort to save shark species from becoming extinct. With that in mind, some private as well as national organizations have accepted the challenge of educating and informing people about the existence of the shark specie and its importance to the sea.

The oceans need to be protected because it is where life began and if not taken care of, life as we know it will end. The well-being of the ocean is constantly being threatened and needs to stop. When dangerous substances go into the ocean, ecosystems suffer and become endangered along with the lives of people and marine life. The importance of protecting and preserving the quality and biodiversity of the world 's coasts must be recognized because they are truly irreplaceable. If humans are not educated , and become careless about what is thrown on the ground or sprayed on lawns, disastrous effects follow when it comes to the condition of the ocean’s ecosystems, which can endanger life itself, leading to a problem only we can correct. There is historical evidence of ocean pollution, although the problem still shadows us today.

The Shark’s place in the marine ecosystem is as a predator at the top of the food chain as there is no natural predator of sharks. Sharks are not very fastidious about what they eat but their diet generally consists of seal, crab, squid, lobster and fish. If sharks were to become extinct there would be an ecological cost. The marine life that is the shark’s food source would start to overpopulate with nothing to prey on it. One possible reason that sharks are coming closer to shores is that their natural food source is diminishing due to overfishing by humans. To stop sharks from being too near to popular swimming locations, fishermen need to expand or change their hunting areas.

Fish 1and chips, messed up ecosystems and broken food chain. Why do we have to cull our beautiful sharks that have done no harm to us? I have conducted a research about shark culling and why people do this. I strongly disagree to shark culling. I mainly think that we should just keep an eye out on the sharks in the ocean. They only mistake us a seals and eat us. We should all incorporate and help increase the population of sharks again. Now why do people cull sharks and how can we prevent this? What does shark culling affect?

People visceral when they see a shark and they try to capture and kill it. Only some people want to protect sharks. Sharks help by keeping the fish population down First, we can protect sharks by doing little things such as stop finning sharks, picking up our trash. Next people destroy environments by oil spills. Not picking up trash. Last if people don’t stop finning sharks and not throwing their trash away our environment will smell bad and we will have no sharks left.

Marine waters cover approximately four-fifths of the surface of the Earth. Such places are considered as an ecosystem because the plant life supports the animal life and vice versa. Marine ecosystems usually have quite a large biodiversity and are therefore thought to have a good resistance against invasive/introduced species. Sharks play a very important role in the oceans in a way that an average fish does not/can not. Sharks are at the top of the food chain and/or food web in virtually every single part of every ocean (Arctic, Atlantic, Indian, Pacific and Southern). Sharks keep the populations of other fish healthy and in proper proportion for the marine ecosystem; therefore if the shark population keeps decreasing there would be overpopulating species of fish and other food consumed by sharks. This could then lead on to cause many problems to the plant life as well, as some omnivorous animals may be forced to have a diet of strictly plants, which

Thesis: Sharks are a vital part of our ecosystem, and killing them disrupts the delicate balance of the ocean.

In 2009, Dr. Sylvia Earle wrote The World is Blue to educate and alert the reader about human impacts on marine ecosystems. Through this book she conveys her passion and methodical arguments concerning the importance of the conservation of the ocean, which encompasses approximately 80 percent of the earth’s surface. Dr. Earle states “the ocean touches you with every breath you take, every drop of water you drink, every bite you consume” (17). This statement emphasizes the significance of the ocean, not only for marine life, but all life forms on earth. The book implies that currently in today’s world, the conservation of the ocean requires a global effort to reduce human damage from the past generations. Using facts gleaned from credible scientific resources, she defines the problems of overfishing, bycatch, and pollution. By analyzing human impacts on marine ecosystems, Dr. Earle determines successful and unsuccessful solutions to these problems and suggests various ways individuals can change their lifestyles to reduce impact on the environment as a whole.

The environmental factors are about the conditions and the surroundings that we live in. Shark finning is an awful practice that causes negative impacts for the environment. Once the sharks are caught, the fins are cut off and are returned to the waters. Almost always, they don’t survive due to predation to other animals, blood loss or from suffocation. The Shark Population is massively decreasing. Specialists estimate that approximately 100 million sharks are killed. In the marine ecosystem, sharks are probably the primary predators and ocean takers. They are apex predators who are responsible for keeping the population in balance. They have been around Earth for 400 million years. The Earth is 70% covered with water and it houses 80% of life on Earth, which is why it’s important to sustain this

II Over the years there has been a huge drop in the population of sharks, because of the popularity of Shark fin soup in china, and this can later on lead to the ocean ecosystem to be disrupted, if sharks are extinct.