While the author argues that the all-white orca whale spotted in 2000 and the one was found in 2010 are different ones, the lecturer opposes that those whales are the same one. (의미가 두가지로 해석될 수 있어서 조금 더 명확하게 해주시는게 좋을 것 같아요)
First of all, the speaker contends that the whales’ skin color could be changed by algae. Since their skin color are affected by the algae and they usually feed reside on where algae are abundant, their skin color might be changed. On the other hand, the author argues that the different colors of the two whales discovered in 2000 and 2010 indicates that this evidence that they are not the same whales.
In addition, the speaker says that it is possible for the whale to swim 1500 miles. The reason is that Orca whales can be divided into two kinds,; one is hunting type and the other is fishing. These fishing whales are able to swim about 2000 miles with drifting icebergs. However, the author contends that the spotting sites are too far for a whale to swim.
Finally, the professor argues that the size of the whales’ fins can tell their ages but it is inaccurate. Especially, it is hard to know the age when they are twenty to thirty because the dorsal fins stop growing after twenty. This contradicts the author’s argument that the size of dorsal fins are similar, so the whales that were observed are the different ones.
예상점수: 21-24
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