Heal the Bay discovered that,“Did you know there is a DDT and PCB hot spot off the coast of Palos Verdes? This superfund site (which indicates it's one of the most polluted places in the United States), is left over from a 1930's era chemical plant. Because DDT takes so long to break down in the marine environment, it persists to this day, contaminating certain species of fish. There are also highly polluted sediments in the Long Beach area, a sign of the heavy shipping in the port. Heal the Bay works on developing effective capping and removal plans to keep those toxins from spreading” (Heal the Bay).
If we do not take action all modern day marine life will die off and primitive organisms will once again, rule our oceans. Industrialization is a major contributor to the more evolved marine organisms dying off. From over fishing to over dosing our oceans in nutrients, it seems we’re trying to kill off all evolved marine life in our seas. Overfishing is a huge factor we must consider. Over fishing occurs when marine species are caught faster than they can reproduce.
These really affect not only animal life but the quality of the ocean. Ships and boats are the main cause for so much oil being in the water. These leaks can make a huge black spot in the middle of the ocean and animals can swim through there and get easily contaminated. In 1979, 1.1 million tons of oil was released into the ocean. Many animals could have eaten some oil and gotten infected.
The effects of over fishing are much more diverse. It disrupts the ecological balance of the region. An example of this is in an article in the National Geographic written by Warne Kennedy showing how over fishing of spiny rock lobster and snapper in the waters near an island in New Zealand called Goat Island caused the population of a species of sea urchin to explode. As a result, the local reefs and kelp fields were severely damaged, and when fishing there was stopped the sea urchin numbers went back to normal and the kelp grew back (Kennedy 70-89). See when the predators (spiny rock lobster and snapper) population drops, it causes its preys (sea urchins) population to increase.
The size of the patch is particularly unknown although there has been some estimates of its size including media reports that say, “Twice the size of the continental United States,” The Great Pacific Garbage Patch, (A.K.A. The Sea Life Killer) was formed simply by marine pollution and currents flowing through the ocean. We are the ones killing the ocean. The patch is an existence because of our selfish polluting habits. Every year cargo ships throw trash overboard and pollute the sea; therefore hurting marine habitats and to an extension, marine life.
It is estimated that 90% of the big fish in the oceans are disappearing according to CNN. Overfishing has been a big impact on the world today and it has affected many people. Truthfully, overfishing is a big problem today and drastic measures should be taken to prevent it. Fish have been decreasing by too much each year and solutions should be made. Overfishing has become a problem each year and measures should be taken to limit the effects, such as keeping fish in captivity and controlling pollution.
Besides, stern trawling mixes up loads of silt from the base of the sea. Residue can chafe fish gills and build the turbidity of the water and in this way lower essential efficiency. Activity—Part 3: Describe, in a summary paragraph, what the factor is and how it contributes to the world's declining fisheries. Be sure to include facts with your
Many of the methods used in commercial fishing are very destructive to the aquatic systems. Industrial ocean trawlers scrape the bottom of the water, often dragging up the seafloor with them. This destroys the habitat and kills many of the bottom dwelling organisms that are vulnerable to these practices. There is also a large amount of marine animals that are unintentionally caught by the large nets. These animals are considered bycatch, having no value to fishermen and are usually killed.
Because of this, there have been severe effects on many fish species. Even with regulations such as the law of the sea, which states that a country bordering the ocean has rights to the fishing areas within two hundred nautical miles of its shores, there are considerable abuses. In Pauly and Watson’s article, it states that the preservation of the country’s fisheries is up to the country itself. The country may also give out rights to other countries to fish its waters. When this occurs, there is a great chance the fleets from other countries will attempt to “garner as much fish as they can” (Pauly, par.