Both the writer and the professor are taking about the humpback whales ability to migrate long distance for feeding and mating purpose.

Both the writer and the professor are taking about the humpback whales ability to migrate long distance for feeding and mating purpose. While the writer suggests that the humpback whales use the star to navigate, and he gives three supporting explaination. The professor finds these evidence not convincing, and cast doubt on each one. To start with, the author posits that because the whales' brain power far exceed that of the most animals, whales seem to be intelligent enough to use the stars to navigate by. However, the lectuerer explains that the recent studies show that there is no relashionship betwen the animal inteligent and the ability of navigation. More over, he gives an example of ducks, that use sky navigation, and they are not inteligent animals. Secondly, according to the reading, due to the fact that humpback whales maintain movement in a straight line direction for long distances, while they are swimming in open ocean with no physical landmarks, support the theory of using the stars at night. On the other hand, the listening explains how whales are one of the animals that have magnatic particles that affected by the magnatic field. Consequencily, they use the earth magnatic field not the stars. Finally, theauthor contends that humpback whale are exhibit spy-hopping to look to the stars, which could proived the whales with the information they need to navigate with. The professor challenges this point by saying that it is rare behavior. In addition, the sharks also do it, inspite the fact that they do not migrate. As a result, it is just spaculations.