Integrated Writing 49 Both reading and lecture main discussion is whether the humping-whale does navigate based on stars position or not. The reading supports this statement while the lecture arguments are opposed to it. The main points discussed are the following. First, the author points that one reason because whales probably use this strategy to navigate straight is based on its hi-degree of intelligence. It is known that whale’s intelligence is superior to most other animals. This point is contradicted by the lecturer, by stating that there are other animals able to navigate using stars, but they have no excellent intelligence compared to other animals, as whales do. To illustrate it, the lecturer gives the example of the dukes. Second, the reading and the lecturer agree that these animals are conducted by external forces. The reading passage states that these forces are the starts that they use as a reference. As an example, the author uses other land animals, which uses land point to reference their paths, like birds. On the other hand, the lecturer believes that the external force giving the direction to the whales is the magnetic field. He explains that whales have biomagnotide in their brain and thus they are able to feel the magnetic field and follow a straight path. At last, the author says that the spy-hopping is a habit that whales have because they are looking for starts to get their directions. The lecturer confronts this idea and supports that other animals also have this habit, but do not migrate. In addition, he says that whales also do the spy-hopping at day time, when there are no stars at the sky.