Whales

https://mrvanarsdale.com/marine-science/online-textbook/chapter-4-marine-mammal-adaptations-for-diving/ http://news.yahoo.com/california-blue-whales-once-nearly-extinct-back-historical-160435036.html https://www.youtube.com/watch?v=Ozi7lcyatt0 https://www.yahoo.com/news/humpbacks-block-killer-whale-feeding-174100756.html