Marine mammal Marine mammal Marine mammals are aquatic mammals that rely on the ocean and other marine ecosystems for their existence. They include animals such as seals, whales, manatees, sea otters and polar bears. They do not represent a distinct taxon or systematic grouping, but rather have a polyphyletic relation due to convergent evolution, as in they do not have an immediate common ancestor. They are also unified by their reliance on the marine environment for feeding. Marine mammal adaptation to an aquatic lifestyle varies considerably between species. Both cetaceans and sirenians are fully aquatic and therefore are obligate water dwellers. Seals
March Mammal Madness March Mammal Madness March Mammal Madness is an alternate March Madness tournament focusing on simulated combat between non-human mammals, instead of college basketball. The bracket is run by a team of evolutionary biologists, using science and probability to determine the outcomes of the fights. The goal of Mammal March Madness is to provide a fun and exciting way to spread scientific knowledge about the competing animals, as well as awareness for animal conservation. March Mammal Madness dates back to 2013, when founder Katie Hinde discovered a Buzzfeed Animal Madness bracket online. She was disappointed to find it only contained 16