The marine otter only lives in saltwater, coastal environments and rarely ventures into freshwater or estuarine habitats. There are 13 species of otters, in seven genera, according to Integrated Taxonomic Information System (ITIS). [3] Some invasive aquatic species that have been introduced into that area are limiting the mollusks and fish available for otter prey. Southern sea otters (Enhydra lutris nereis), also known as California sea otters, were listed as threatened in 1977 under the Endangered Species Act. The tail comprises less than a third of the body length. They include the Southern River Otter, Hairy Nosed Otter, Giant Otter, and the India Smooth Coated Otter. References ↑ Sepúlveda, M.A. Their toes are webbed, they have short legs and they boast a tapered tail ranging up to 15 inches long. It is found in Chile and Argentina. Only one otter species seems to be thriving, and that's the North American River Otter. This species has been exterminated from much of its range in Chile by hunting. The marine otter is a rare and relatively unknown South American mammal of the weasel family (Mustelidae). Although called a "river otter", it inhabits both marine and freshwater environments. The southern river otter is generally brown dorsally, with a lighter, grayer underside. Adults grow to about three feet in length and weigh 10-20lbs. She has worked with the endangered Ethiopian wolf, the Serengeti cheetah and the Atlantic salmon. The weight of a North American river otter measures around 5 – 14 kg (11 – 31 lb). [4] The surveyors spoke with people who live and work near these areas, and looked for prints and droppings of the southern river otter, while also looking for signs of the American mink. This is good news for conservation efforts due to the fact that cross genus cloning efforts have come a long way in recent years. By 1911, hunting for the animal's luxurious fur had reduced the sea otter population to fewer than 2000 individuals in the most remote and inaccessible parts of its range. It is the animal most frequently farmed for its fur, exceeding the silver fox, sable, marten, and skunk in economic importance. The continual decrease in prey numbers also causes problems for the southern river otter. Though it is the largest, it isn’t the heaviest. The groups are centered on a dominant breeding pair and are extremely cohesive and cooperative. List of all endangered species (animals & plants). The river otter food chain includes many types of fish, mollusks, crustaceans, aquatic plants and roots, eggs, and some small mammals and birds. The neotropical otter or neotropical river otter is an otter species found in Central America, South America and the island of Trinidad. The southern river otter is listed as endangered, due to illegal hunting, water pollution, and habitat loss. Their habitats also need the root systems of mature trees, as well as fallen tree debris. She is a Senior Research Technician with the Institute of Zoology, the research division of the Zoological Society of London. The giant otter or giant river otter (Pteronura brasiliensis) is a South American carnivorous mammal. At this point, only seven known populations of this species are found throughout Chile and Argentina, and all of the populations are isolated from each other. Other mustelids include ferrets and mink. It is the noisiest otter species, and distinct vocalizations have been documented that indicate alarm, aggression, and reassurance. Population estimates are unavailable. Otters are adorable creatures that live both on land and in the water. It is know population in freshwater habitats are confined to seven isolated areas between Cautin and Futaleufu. Body weight averages about 5–10 kg (11-22 lbs). Its feet are equipped with claws and webs for swimming. Would you like to receive a notice and link when the The North American river otter, also known as the northern river otter or the common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. Although called a "river otter", it inhabits both marine and freshwater environments. It has a long body, a flat head with small ears, and a broad muzzle with whiskers. It is found in Cameroon, Republic of the Congo, Democratic Republic of the Congo, Gabon, and possibly Angola, Burundi, Central African Republic, Equatorial Guinea, Nigeria, Rwanda, or Uganda. Dada Gottelli is a British Zoologist. This offers a chance at re-population, if worst comes to worst. In warmer times, you may also see otters sliding down a riverbank. It is one of the driest regions in the country. Females are slightly smaller, weighing 14-33 kg and measuring 1-1.4 m in length. 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