According to McCarthy (2008) in his article, “killer Whales blamed for decline of Scottish seals” many researchers think that the killer whales, which are famous for eating many kinds of sea animals, are the main reason for making the numbers of Scottish seals decrease. First, he states that harbour seals quantity has fallen in Britain, but they do not know exactly why this has happened. According to the article, there are two kinds of British seals; one of them has population problem, but the other one does not. Next, he claims that even though there are many reasons that seals die and decrease, some researchers from Aberdeen University recommend killer whales (orcas) as the main reason. Third, the author says that the orcas are one brutal kind of dolphin and never eats people, but they eat sea lion at the shore. Then, he states there is relationship between when the seals die in the beach and when the killers have seen around the area. Also, some researchers know that killer whales eat every age of seals, so it is enough to drop numbers of seals down. He states that killer whales prey on many sea animals, such as sea lions, sea otter, elephant seals, and minke whales. After that, he mentions that this problem did not occur in the past, but it is happening now because the deteriorated population of the great whale before five decades ago by people. In conclusion, the author illustrates killer whale’s general description, such as weight, height, place, and so on.
It is good to have some researcher make some analyses about the seals’ problem, but I do not agree when they make the killer whales only responsible for that, because maybe they could find another sea animal does that; killer whales are a kind of dolphin, and there is a lack of equality about the number of killer whales and number of seals.
First, there are a lot of carnivorous animals in the sea, so why are only killer whales blamed by those researchers? Because not only killer whales feel hungry, but also all sea animals feel that too, we should find other animals who could have done that. We agree that orcas eat seals and other sea animals, but we cannot blame them because it is not enough evidence to do that. If they want to approve that, they should put a camera in the area that the problem occurs in. Also, they can reinforce that by an account of how many seals have been eaten by killer whales. Then, we can believe that.
Next, because killer whales are one of the dolphin family members, we cannot expect them to do that. We always know the dolphin as having cute, friendly, helpful, and beautiful characteristics. When we look of the killer whale appearance, we can notice their black and white color. We cannot believe these animals cause population problem for other animals. We can see a lot of footage in the YouTube web site that shows killer whale playing with some seals by his fluke, like a volleyball game, then return the seals to the beach safely.
Finally, we know that numbers of killer whales are decreasing and they may be extinct in a few years, but seals’ number is also declining. So that is contradictory, because if the numbers of orcas go down, we should anticipate stable numbers of seals deaths or an increase. It is clear to see the confusion here. Also, killer whales cannot eat more than what they want, so how can the numbers of seals decline? Who know?
In conclusion, it is not true that killer whales cause decline to seals animals because not just orcas live inside the sea, not from shark family member, and the quantity of seals has not remained constant. In fact, the researchers should rethink the problem.
McCarthy, M. (2008, April 14). Killer whales blamed for decline of Scottish seals. The Independent. p. 14. Retrieved October 20, 2008, from Lexis Nexis database.