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
Northcoast Marine Mammal Center is the Executive Director of the Northcoast Marine Mammal Center. Northcoast Marine Mammal Center The Northcoast Marine Mammal Center (NMMC) is a non-profit organization dedicated to the rescue and rehabilitation of stranded, sick or injured seals, sea lions, dolphins, porpoises and whales along the northernmost coast of California. The Northcoast Marine Mammal Center is funded by donations and grants and has a large volunteer force which allows it to accomplish its mission. The Northcoast Marine Mammal Center is located in Crescent City, California and has operations that cover a significant portion of the region. NMMC was founded in 1984 by