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Cetacea, Carnivora, and Sirenia
- Three orders of the class Mammalia contain marine mammals: Cetacea, Carnivora, and Sirenia.
www.ncbi.nlm.nih.gov › books › NBK236689An Introduction to Marine Mammals - Low-Frequency Sound and ...
Feb 1, 2019 · Marine mammals are classified into four different taxonomic groups: cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions, and walruses), sirenians (manatees and dugongs), and marine fissipeds (polar bears and sea otters).
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What is a marine mammal?
Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears. They are an informal group, unified only by their reliance on marine ...
- Pinnipeds. The pinniped group includes seals, sea lions and walruses. This group of animals are characterized by being fin-footed, carnivorous and mostly aquatic.
- Cetaceans. Cetaceans are the most diverse group of marine mammals and include species of whales, dolphins, and porpoises. There are roughly 90 different species of cetaceans and this diverse group of animals can be found in oceans and in some cases- rivers, all over the world!
- Sirenians. The sirenians, also known as the sea cows, are a group of herbivorous, slow-moving, fully aquatic mammals. Sirenians are broken up into two families; the dugongs and the manatees.
- Fissipeds. While you may have never heard of the term “fissipeds”, you likely know what a fissiped is. There are many species of fissipeds, but there are only two species of marine fissiped.
There are 130 described species of marine mammals living in the earth’s oceans. They are divided into three orders: Cetacea (dolphins, whales, and porpoises), Sirenia (sea cows), and Carnivora (carnivores).
There are five groups of marine mammals: pinnipeds (or “flipper-footed” animals like seals, sea lions, fur seals and walruses), cetaceans (species that cannot survive on land, such as whales, dolphins and porpoises), sea otters (the smallest marine mammal), sirenians (warm water species such as dugongs and manatees) and polar bears (which ...
Dec 5, 2023 · The five main groups of marine mammals are baleen whales, toothed whales, sea cows, pinnipeds, and marine fissipeds. What is a marine mammal? Marine mammals have all the characteristics you’d expect from a mammal. They breathe air, are warm-blooded, produce milk, and give birth to live young.
Feb 4, 2019 · There are three families of pinnipeds: the Phocidae, the earless or ‘true’ seals; the Otariidae, the eared seals, and the Odobenidae, the walrus. These three families contain 33 species, all of whom are well-adapted for a life spent on both land and in the water.
