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Overfishing environmental impacts
Impact of overfishing
Impact of overfishing
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Overfishing is a problem for the weddell seal because if there’s overfishing than our animal would not be able to eat healthy food and even have enough. Sharper teeth to kill the fish easier and faster, overfishing is happening faster and faster. The weddell seal needs to be able to eat and be healthy at all times. One thing we can add is sharper teeth for them to catch the fish easily before they all gone. The sharper teeth will allow them to get the fish and eat it quicker instead of getting the fish and taking a long time to finish. In the time the seal is eating the fish, overfishing would have occurred and it would be even harder for them to catch the fish because they will need to be fast and have good eyes to find it.
The nature of the long- necked seal is very shy and they have retiring behavior, the features and geography of the Loch Ness fully support the animal’s reluctance and timid actions. The animals are more likely to appear on warmer days, this also results in the appearance of people which can account for the recorded findings in Scotland. The speed of these animals, over twenty knots, can also account for why their identity can be mistaken for other animals or why there are so many theories (Shovlin 28). A Weddell seal, a species of Antarctic seal, have been known to hyper oxygenate their blood stream for long dives, up to half an hour below the freezing ice. This relates to the long-necked seal because it illustrates how they could have survived the freezing temperatures of the loch for so long, and with being below the surface it accounts for the rare sightings (Shucker). The mystery of Loch Ness is slowly, but surely being uncovered by new scientific findings and the piecing together of well- known
In the past twenty years a large amount of bottlenose dolphin have been killed due to the tuna fishery. In the Eastern Pacific swim large schools of tuna, these shoals tend to be under herds of dolphins, for some unexplained reason. Because of this, fishermen can easily find schools of tuna. The tuna are being caught under purse seine nets, which encircles the shoals of tuna and then is pulled back on board the fishing vessel, catching both tuna and dolphin. Initially the mortality rate was 500,000 each year for dolphins alone. Although some efforts are made to encourage the dolphins to leave the net by backing down part of the net, which allows the dolphins to escape, there are still a large number of mortalities (Bryant). On the other hand, in the last few years there has been dramatic progress in stopping the fishing industries from using purse sine nets. It has been found that dolphins are in immediate danger of extinction if these fishing techniques don’t stop.
Overfishing may have some benefits to it, but does it out way the negatives? By fulfilling our demand we can wipe out our whole oceans! Not just the fish, but water mammals too. Sure it can create jobs, but as what cost? It can help bring up our economy, but at the same time it can bring it down with many fish companies closing down due to lack of profit. Fish is a great source of nutrients, but too much can kill you! In other words, fish can be both beneficial and harmful to not only humans, but everyone and everything surrounding fish. There are three things people can do to help with overfishing, the first thing is to be aware of what you are eating. Is the fish on the fear of extinction list? Also asking yourself is the fish you’re about to eat really the fish you intend to eat? Another thing to ask is, was it shipped over seas? If it was it doesn’t benefit anyone, it won’t help the economy or you. Many fish shipped from a long ways creates pollution and may have lost its nutrients value from the long voyage. One last thing to do is if you see a sewer with a sign leading to the ocean, try not to leave trash near it, or better yet don’t litter at all! All the litter left out on streets or near sewers can cause pollution in oceans, lakes, and rivers which is very harmful for marine life. You can still enjoy fish, but not at such a high demand as
Hawaiian monk seals, Neo Monachus schauinslandi, are no ordinary species. They are Hawaii’s state mammal and are currently endangered. The Hawaiian Monk seal is rare because of many factors, which include overhunting, getting trapped in fishing nets, and overhunting of their favorite food, lobsters. Because of their rarity, the Hawaiian Monk Seal is a main attraction to tourists all over the world. Found in Hawaii, this monk seal is one of the two species left of the ancient seals. Grouped into the earless seal category, the Hawaiian Monk seal has two other cousins, the Caribbean Monk Seal (extinct), and the Mediterranean Monk Seal (critically endangered). The Hawaiian Monk Seal has a lifespan of 25-30 years, weighs 500-600lbs,
Earth's oceans make up over 75% of the Earth as a whole. With that being said, it is vital to understand the significance on the contents of the oceans. Since fish and marine products make up a large portion of our diet, fishing practices need to be properly managed. In this essay, overfishing will be defined, its consequences will be revealed, and plans for proper fish distribution will be executed.
Since the 1500s Harp Seals have been hunted for their oil. Now a more modern phenomenon is causing them to be hunted, their white fluffy fur. Only baby Harp Seals have the white fur so this hunting adds to the difficultly of reaching adulthood. As the fur is of very high value they were hunted heavily causing population decrease. The model shows overfishing directly leads to the decline in the Harp Seal population. However, in the 70s conservation laws were passed protecting them. Yet, unfortunately Harp Seals are still-hunted adding to the decline of their population. (Kovacs,
In the article it say’s “Hearn said the hunt helped keep the numbers under control and protected the fish stocks.”(David) This quotation shows that by hunting the seals we are protecting the fish stocks. If we do not hunt the seals there will not be enough fish for us to eat because the seals are going to have the fish for themselves leaving us with nothing. When we hunt the seals we are maintaining the fish population and protecting it from the seals. Pursuing this further it say’s “Many Newfoundland fishing communities are devastated by the collapse of cod stocks in the 1900’s and the hunt is one of the few things sustaining remote coastal towns”(David). This quotation states that the seal hunt was one of the things that was sustaining and was providing food for those coastal towns. Also another thing that was stated in this article was that the Newfoundland fishing communities were devastated when the stocks for the cod collapsed because all the seals took over. In the 1900’s they did not hunt seals as much and it lead to a collapse in cod stocks. This is why going forth with the seal hunt will help maintain the seal populations and it will help maintain the fish
With a quota of roughly around 350,000 seals killed annually during March and April, the Canadian Commercial Seal Hunt is said to be the largest and cruelest marine mammal slaughter. The Canadian Seal Hunt is the brutal killing of baby harp seals, occasionally hooded seals, most of them 12 days to 3 months old. The Commercial Seal Hunt should be banned against all costs because of its savagery, purposelessness and the lack of profit to the sealers themselves. Many people compare seal hunting to killing domesticated animals, but it is nowhere near the same thing. Domesticated animals are well fed and groomed, and only after that do they get slaughtered. Most importantly they don’t get killed within a few days of their birth. Also seals are
Overfishing is defined as a form of overexploitation where fish stocks are brought down to unacceptable levels. In the UN Food and Agriculture Organization’s 2 yearly report (SOFIA), it states how over half of the fish stocks, worldwide, are fully exploited. Other research has shown it only takes 10-15 years of industrial fishing to obliterate a tenth of the intended specie. Overfishing causes a ripple effect that hurts the entire ecosystem. The balance of chain depends largely on the interaction between the predator and the prey. For example, if the larger fish are removed than its prey begins to overpopulate, due to the lack of population control. The balance in the oceans are a urgent problem, around 90% of predatory fish stocks are depleted. The ripples can extend even further to land creatures like
Sharks have several ways to dispatch their prey with surprise attacks, agility, and camouflaged sneak attacks. The shark’s dentition also tells the story of their diet as well as their method of attack. The Great White Shark, (Carcharodon carcharias), is the largest extant predatory shark on Earth and has large serrated teeth that tear through the flesh of its prey. Their teeth are 2.5-3 inches in height and have prominent serrations which allow them to tear large chunks out of prey including large fish, seals, sea lions, other sharks, carrion, dolphins, elephant seals, stingrays, and fish [8], [13]. These sharks hunt by swimming below the intended prey item and with a sudden burst of speed; they will attack with a large single bite and then swim off to allow the prey to bleed to death. These sharks are famous for breaching the water to grab seals and sea lions around the coast of South Africa in an area called Seal Island [7]. When the seals swim farther off from the island where the water is much deeper, the shark’s rate of a successful attack increase compared to the lowered success rate in shallower waters where the seals can easily outmaneuver them [7]. The bite force of the Great White measures around 4,000 pounds and is able to bite prey in half [10]. Great Whites
The annual hunt of harp seals (Pagophilus groenlandicus) in Atlantic Canada is contested at the start of nearly every season, with celebrities, politicians, and the public actively weighing in on the matter. Within all of the dialogue and debate, there can be a lot of bias and misrepresentation of facts advocating for or against the seal hunt. Thus, the true sustainable aspects of the industry are drowned out and lost due to the sheer amount of controversy surrounding the issue. Sustainability entails meeting the needs of today without sacrificing the needs of the future (“Sustainable Development” 1). The concept of sustainable resource development involves support pillars that represent economics, society, and the environment. Seal hunting, as it is practiced today in Canada, is indeed sustainable and should continue. The harvest is rooted in a cultural tradition that brings economic benefits to Atlantic Canada while maintaining due respect to the environment. An examination of these tenets, as well as criticism in opposition of the hunt constitute the body of this essay.
Canadian’s culture initiates from their wildlife and forests. Many different ways of living in Canada’s regions has an impact on the cultural view. The major problem with the wildlife view involving cultural acts is Seal Hunting. Seal Hunting has been continuing for years and harming many of the seas natural inhabitants. In the Gulf of St. Lawrence, which is in the Maritimes, is a popular venue for such activities. An exploration of a day in the life of a seal and hunter is portrayed in the Maritimes, and its effect on the culture in the Maritimes.
*King, J. (1983). Seals of the World. British Museum (Natural History) and Cornell University Press. PP 20-26.
The overfishing for shark fins has decimated certain species and endangered other species of sharks. Sharks have existed for thousands of years. Scientists have proved that ancestors of today’s shark species existed during the age of the dinosaurs. Sharks have resisted extinction for so long because of natural selection, but since the new delicacy of shark fin soup has become popular in mostly Asian countries they might not resist extinction for much longer. Sharks are extremely vulnerable creatures, despite their frightening amount of teeth. While it takes humans on average thirteen years to reach sexual maturity, it takes sharks up to 20 years and they produce very few offs...
The morphology of whale sharks is mostly similar to aquatic fish species, but many specific traits help differentiate them from the rest. Whale sharks are the largest fish in the world and can reach a size of around 20 meters (Martins, C., and C. Knickle). This is often compared to the size of a school bus. The shark has a very large transverse mouth. They have 5 very large gill slits and have a larger first dorsal fin compared to the second one (Whale Shark). They have a distinctive spotted “checkerboard” pattern with stripes (Martins, C., and C. Knickle). It is not exactly known why they have this specific body marking. It is believed that the body markings act as a camouflage. The strange thing about whale sharks is that they have 300 rows of teeth that play no role in feeding (Martins, C., and C. Knickle).