Marine mammals are classified into several orders including Pinnipedia, Carnivora, and Sirenia. Pinnipeds like seals, sea lions, and walruses have specialized bodies for swimming. They are insulated by thick layers of blubber and fur or hair. True seals lack external ears and wiggle across land, while eared seals and walruses can turn their hind flippers forward. Sea otters and polar bears are also marine carnivores. Sirenians like manatees and dugongs are closely related to elephants and are strict herbivores that feed on seagrasses.
1. Marine Mammals Kingdom: Animalia Phylum: Chordata Class: Mammalia Order Pinnipedia Family Phocidea Family Otariidae Family Odobenidae Order Carnivora Order Sirenia
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