Wolves Of The Sea Research Paper

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The Wolves of the Sea
Orcas, dazzling and exquisite, become one with the azure lustrous waves of the ocean as the golden crepuscular ray slowly sets. Nonetheless, on the other side of the world, sixty-one killer whales have no memoir of the salty essence of the sea, where they rightfully belong nor the fiery red sunset. These magnificent marine mammals earned their scientific name Orcinus Orca from Orcus, the barbaric Roman god of the netherworld for their ability to advance on larger sea creatures. A killer whale’s diet mostly consists of fish, squid, seals, birds, and reptiles, consuming “approximately 3% to 4% of their body weight in food per day” (Marine). Strikingly, scientists found remnants of orcas in their stomachs. However, it is …show more content…

However, National Marine Fisheries Service (NMFS) studies that there is a recent collapse in the population due to “alteration of ambient stream water temperatures” (Kris), and human activities such as logging and fish farming. As a result, the Orcinus Orca become apprehensive for the sudden decline in salmon, having to segregate from their suitable environment, and eventually die from starvation and the incapability to maintain homeostasis. As stated in the previous paragraph, contaminants are also a significant hazard to a killer whale’s natural habitat. A common pollutant is Polychlorinated Biphenyl (PCB), which is presently bootlegged but was frequently used in Europe from 1954 to 1984 although governments banned the contaminant in 1979. Europe presumably has exceeding levels of PCB because they delayed the ban by five years. Additional harmful substances that affect the orca’s environment are lead, mercury, abandoned marine toxic waste dumps and pollution of inland waters. Nonetheless, the pollutants and destructive human activities are beginning to be recognized worldwide as environmental problems by The European Union and Michael Jasny, a lawyer and senior policy analyst for the Natural Resources Defense Council, who are active in reducing undersea noise. Underwater noise results from ship trafficking which prevents killer whales and other marine mammals from communicating and finding prey, causing …show more content…

However, they cannot survive in ice-filled waters. Studies illustrate that the orca’s echolocation calls and diet relate to their environment, as the Orcinus Orca migrates to where their food supply travels. A short while ago, on May 31, 2016, a group of geneticists led by Andrew Foote deciphered the DNA codes of fifty killer whales and came to the conclusion that transients (orcas who hunt marine mammals) have a “genetic variation that helps them store vital nutrients between meals” (Radford). The geneticist’s genome sequencing project justifies that a killer whale’s DNA sequence plays a key role in the mammal’s adaptation to its environment. Examples of these genetic variations include the killer whale’s behaviors, such as their appetite for oil-rich diets or having to store key nutrients after every meal. Andrew Foote claims that the genetic variation “is linked to the geographic spread” (Radford). I support Foote’s assertion that a killer whale’s environment heavily relies on the marine mammal’s genome sequence. Currently, the Vancouver Aquarium is researching the killer whale’s

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