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
Marine Mammal Regulations Marine Mammal Regulations Marine Mammal Regulations (MMR) is a set of rules that govern the taking (fishing, hunting) and treatment of marine mammals in Canada. The regulations are part of the Fisheries Act. The Marine Mammal Regulations s are divided into nine "parts": The "Seal Protection Regulations" were established under the Fisheries Act by the Government of Canada in the mid-1960s. The regulations were combined with other Canadian marine mammals regulations in 1993, into the "Marine Mammal Regulations". A proposed amendment in 2012 would have required boats to stay at least 50 meters away from belugas in Churchill and Seal