▶ Your Answer :
In the passage, the author connects the characteristics of humpback whales and their migration to claim that humpback whales use stars to navigate during their migration. The lecturer corrects many things the author wrote about whales using stars to navigate. He believes the evidences that the author wrote are interesting but not convincing.
The speaker then points out that, contrary to the writing, intelligence does not necessary have relationship with star navigating. According to the speaker, the ducks which only have average intelligent can also use the stars to navigate during their migration. The lecturer states that it is more of an instinct that they innately have, rather than intelligent. Thus, humpback whale’s high intelligent may not supports the author’s idea.
Additionally, the speakers disagrees with the article’s claim that whale can still manage to go straight even in the ocean where there isn’t any landmark, because they use star navigation. Instead, the lecturer suggests the humpback whales orient themselves by the earth’s magnetic field rather than starts as humpback whales have bio-magnetic substance inside their brain, which allows them to senses the magnetic field that the earth provides.
Finally, the speaker disagrees that Sky hopping is an action to look at stars. He gives an example of shark. Shark is one of the rare animals that does sky hop, yet they neither migrates or look at the star, instead they do it to hunt. He also argues that whales also do sky hopping during daytime, when they can’t see the sky.
In conclusion, the lecturer and the reading are both about hump whale’s characteristics and star navigation. The lecturer effectively challenges the claims made in the article. |