Sharks have existed in our world for over 400 million years, if they were to suddenly disappear for industrial purposes, much problems will be encountered throughout the world. We must preserve the lives of Sharks, for many reasons most importantly that shark hunting is morally wrong, it may provide economic failure in a given time, and it may serve a critical unbalance of a healthy environmental state. As I mentioned earlier, Sharks maintain the balance of the entire marine ecosystem! If the ocean’s ecosystem were to collapse, it would greatly affect life even on the surface. Sharks tend to eat fish who are much slower and sickly therefore they keep the population of fish in a healthier state.
In contrast to what SeaWorld tour guides may tell you about the whales, “Blackfish” proves killer whales live longer in the wild than they do in captivity. The SeaWorld tour guides are instructed to tell visitors the whales live longer in captivity because of the veterinary care they receive; this is not true. According to the documentary “Blackfish”, female whales can live up to 100 year... ... middle of paper ... ...treated water. Also the whales aren’t fed foods they need for necessary nutrients and are given artificial medications. The whales are also affected mentally when in captivity.
Lit Review Sharks are some of the most feared predators by humans and of course my favorite animal. Their numbers are becoming dangerously close to extinction. The elimination of sharks would affect our entire ecosystem in ways we cannot even fathom. The biggest cause for the decline in shark population is shark fishing. Shark fishing is “the practice of cutting of the shark’s fins and throwing the still living shark back into the sea to die.” (Kettles) My goal is to explain how shark finning, which will lead to the extinction of sharks, will effect our environment and discuss the importance of their conservation.
But instead, overfishing and destructive fishing has become another threat to the marine ecosystem. Not only do corals protect the fish, the fish also protect the reefs by keeping them clean and giving them nutrients and food to thrive. If there weren’t enough fish in the reefs to do so, the corals would not be able to survive. Destructive fishing also does massive damage to the reefs because in some reefs, people have large nets to catch fish in. This technique is not only pointless, but also harmful because the nets will only get caught in the corals, smashing them and the fish too.
Sometimes, less than half of the captured fish is brought back to the shore. The problem of overfishing further disrupts intricate ecosystems maintained by the already threatened coral reefs. Their destruction is synonym to a loss of habitat and refuge to numerous different marine animals. Overfishing must be the main concern of modern society because billions of people depend of fish stocks to survive.
This very valuable resource is the ocean. By over fishing, certain fishing practices, marine pollution and habitat destruction we are diminishing our most valuable natural resource. The ocean provides for us many valuable resources we cannot replace, therefore we need to make a change. “Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves. The earliest overfishing occurred in the early 1800s when humans, seeking blubber for lamp oil, decimated the whale population.” (overfishing) By the mid 1900’s common fish such as Atlantic Cod, Herring, and California Sardines were on the brink of extinction due to overharvesting.
At the beginning of a sea turtle’s life, debris on shores makes it difficult for freshly hatched turtles to complete their journey into the ocean (Triessing, et al.). Their inability to bring this hugely important task to fruition inevitably results in horrifying consequences for the turtles. Once they leave the beach, they commonly mistake plastic bags floating in the ocean for squid or jellyfish, which is why they consume them ("Marine debris impacts," 2012). The ingestion of marine debris by sea turtles proves harmful because the debris provides a false sense of fullness for the turtles and, as a result of this pseudo-fullness, they starve to death. Additionally, the sea turtles often get caught in the marine debris which then drowns or suffocates them ("Marine debris impacts," 2012).
Granted that there is economical profit to be had from shark finning, the massive loss incomparably outweighs the profit. Most, if not, all humans would not enjoy having their limbs cut off and being left to die. It is simply inhumane and brutal. However sharks are experiencing this very thing, and the fact that they cannot express or protect themselves, is leading to the death of hundreds of millions of innocent sharks annually. Odds are that as you are reading this, a shark was killed.
Not only is it hurting humans, but causing some species in the ocean to fight for their lives. More advanced species such as fish, coral, and marine mammals are slowly dying while more primitive species such as jellyfishes, algae and bacteria are growing at unprecedented rates that are baffling scientists. Such patterns where found hundreds of millions of years ago. It’s as if the pattern of evolution is reversing and it’s not looking so good for the more advanced species. When a sample got to scientist Judith O’Neil she figured out that the element was a strand of cyanobacteria.
they have been known to atta... ... middle of paper ... ...ould be made to capture and relocate desirable species, but this would be an expensive and lengthy undertaking. Impoundments that are spring fed may be difficult to keep dry and the snakeheads may survive in the moist bottom sediments if any water is allowed to remain. Rotenone can be used to eradicate northern snakeheads from lakes and ponds; however, this chemical is not a selective piscicide and is effective against nearly all species of fish, native and non-native. The major drawback of treating with rotenone is the loss of native fish species along with the target species. Endangered species within a waterbody may be impacted by this technique.