What does the sperm whale's big head think of this scientist?

Scientists are most interested in the strange big head of sperm whales. People put forward various views on this.

Some people think that the fat in the sperm whale's head acts as an echo detector. Sperm whales eat a lot, averaging 300 kilograms a day. It not only preys during the day, but also eats at night. Sperm whales mainly feed on octopus and squid. In the noisy ocean world, if the position and quantity of prey are not detected by echo location, the action will not be sensitive and rapid. The fat in the sperm whale's big head is like a lens in acoustics, which refracts complex echoes into sensitive detection sound beams and transmits them to the ears, allowing the brain to make quick and accurate judgments.

Some people disagree with this statement. They think the sperm whale's big head contains so much diving oil. Because the sperm whale's food-octopus and squid-lives in the deep sea, in order to catch more food, it must extend its diving time, and the oil in its head plays the role of buoyancy regulator. Who is right or wrong in these two statements remains to be further studied.