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Aug 25, 2024 · Odontoceti: this includes dolphins, killer whales, porpoises, sperm whales and beaked whales. This group is very diverse, its main charcateristic being that they all have teeth. In this group we also find the Amazon river dolphin (Inia geoffrensis), a species of aquatic river mammal.
Sea Lions are charismatic semi-aquatic mammals belonging to the family Otariidae, often called the “ eared seals.”. This family includes Sea Lions, Fur Seals, and Walruses. They have sleek bodies, webbed flippers, long whiskers and playful behavior. They are highly social creatures are known for their agility in the water and on land.
- Whale. The largest animal on the planet. It lives in water, but its food is produced in the same way as mammals. The calves measure 7 meters and weigh 2 tons at birth.
- Dolphin. They have a fusiform body with a very large head. Its coloration is usually gray, and it is able to use sounds, jumps and dances to communicate with its surroundings.
- Sea cow.
- Walrus. Large mammal, in which, depending on the subspecies in question, many characteristics will change. Males shed their hair once a year, while females may take longer.
- Whales. Whales have streamlined bodies tapering toward the horizontal tail that distinguishes them from fish. Their front limbs have been modified into broad flippers.
- True or Earless Seals. Seals live in the oceans of the Northern and Southern hemispheres, primarily in polar, subpolar and temperate climates, with the exception of tropical monk seals.
- Sea Lions. Sea lions have conspicuous external ears. Their four limbs give them good mobility on land. The 13 species of sea lions are divided into two groups, sea lions and fur seals.
- Walrus. The walrus is found in the Arctic Ocean and in subarctic seas. Walruses spend much of their time on land, but they are graceful in water. They dive up to 180 feet deep for clams and shellfish on the ocean floor, staying underwater for up to 30 minutes.
- 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.
Marine mammals comprise over 130 living and recently extinct species in three taxonomic orders. The Society for Marine Mammalogy, an international scientific society, maintains a list of valid species and subspecies, most recently updated in October 2015. [1] This list follows the Society's taxonomy regarding and subspecies.
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Jun 22, 2024 · Polar Bear. Believe it or not, polar bears are considered aquatic mammals as well. With a thick layer of body fat and a water-repellent coat, they are well insulated from the cold air and water. They’re also pretty good swimmers, keeping a pace of 6 miles per hour (9.6 kph).
