When we are in the water, it’s hard for us to see well in the water… When we are in the water, it’s hard for us to see well in the water due to our eyes evolving to see through air vs. the ocean. Marine mammals have large eyes that have adapted to help them see better and farther, but it still doesn’t quite cut it. Instead, they put more energy into hearing to help them “see”. Luckily, Mr. Van Arsdale made a great virtual lab for us to learn about how marine mammals use and produce sounds underwater. Please use this link to find the lab. https://mrvanarsdale.com/marine-science/online-textbook/chapter-2-cetaceans/whale-sounds-lab/ What is sound? What changes in a sound wave when frequency goes up or goes down? What is the Beaufort Lens and how is global warming changing the sound transmission in the Beaufort Lens? Explain how scientists study whale sounds and what kinds of ques
tions they ask. We watched the video in class, but if you need to watch it again, please use this link. Describe what two species of baleen whales sound like. Describe what two species of toothed whales sound like. Compare and contrast them to baleen whales. Describe what two species of pinnipeds sound like. Compare and contrast them to cetaceans. After listening to the Humpback Mating Songs, talk about the structure of the song, and explain why you think they use them. Listen to the three distinct hunting sounds made by sperm whales. Describe the differences, and why you think the sounds change as the hunting activity changes. Think about what we talked about echolocation, then listen to the sounds humans produce underwater. Is the ocean getting too noisy for marine mammals to hear? How could humans mitigate noise pollution? Earth Science Science Oceanography OCN OCN-201L