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For years, river otters have been hunted for their fur, and their pelts are still an important source of income for many people in Canada. There are 13 known species of otters, which range in size from 2.9 feet (90 cm) all the way to 5.9 feet (1.8 m) long! Asian small-clawed otters are increasingly popular as novelty pets, particularly in Japan. Endangered Species: Ebony Ebony (Diospyros crassiflora) is a tree native to the rain forests of central Africa, including Congo, Cameroon, and Gabon. The river otter is … North American river otters (L. canadensis) are still taken as part of the commercial fur trade, but the primary threats to others are the destruction of wetland habitats and pollution. Ebony is an endangered species because many biologists calculate its probability of extinction in the wild is at least 20 percent within five generations. Otters are well suited to a life on the water as they have webbed feet, dense fur to keep them warm, and can close their ears and nose when underwater. there are 13 species of otters, and just about all of them are decreasing. The North American river otter (Lontra canadensis), also known as the northern river otter or common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. They are semiaquatic, aquatic, or marine-based on the fish and the invertebrates. The eeriness did not end there: during a boat ride, one of Rasher’s colleagues pointed to a cove where he had seen hundreds of sea otters splashing in the frigid water in the 1970s. There are 13 species of otter which live in Europe, Asia, Africa, North, Central and South America: Eurasian otters, smooth-coated otters, Asian small-clawed otters, hairy-nosed otters, sea otters, North American river otters, neotropical otters, giant otters, Southern river otters, marine otters, African clawless otters, Congo clawless otters … They are fast, naturally secretive and usually nocturnal. Their webbed feet and long, muscular tail enable them to swim … Heavy … Open-water and coastal marine species, including the few Antarctic breeding species (e.g., leopard seals, Hydrurga), were grouped separately. The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean.Adult sea otters typically weigh between 14 and 45 kg (31 and 99 lb), making them the heaviest members of the weasel family, but among the smallest marine mammals.Unlike most marine mammals, the sea otter's … River otters forage alone or in pairs. The otter is one of conservation’s success stories: following a catastrophic decline during the 1950’s and 1960’s, there are now healthy otter populations throughout most of Wales. Excellent and lithe swimmers, the young are in the water by 10 weeks of age. Otters have a long muscular tail, short stout legs and thick oiled fur. The Japanese otter was known as one of the top carnivores in the aquatic food chain. Sea otters eat between 20-35% of their own body weight daily. There are many otters reserved in detention, but these are in animal welfare centers, zoos or protected areas. California’s southern sea otter has been listed as a threatened species under the Endangered Species Act since 1977. They are active during the day and at night, hunting in streams, rivers and ponds … Small rounded ears and nostrils close when the otter is underwater. Otters then go and eat many fish—let's say 100. There are no terrestrial mammal species native to Antarctica. Otter - Otter - Conservation and classification: Nearly all species of otters face increasing threat as urbanization and logging continue. Males are larger than females. They only reach about 13 pounds (6 kg) vs. 100 pounds (45 kg) in sea otters. They come in many sizes. They were extirpated from portions of their range, but conservation and reintroduction efforts are helping populations to recover. As recently as the mid-1980s, more than 30,000 pelts were harvested annually. — Picture by Hari Anggara. Although four other species of freshwater otters may obtain some of their food from the sea, only two of the approximately 67 species in this family are truly marine, the sea otter and the … Because of their voracious appetite, they are occasionally accused of driving their prey species into decline by fishermen who compete for the same prey species. Adult marine otters are quite small. How many otters are there in Italy? Ebony is threatened due to … In Florida, river otters weigh 5-14 kg (11-31 lb). There are 13 otter species around the world, including the giant river otters, North American river otter, Asian small-clawed otter, European otter, Japanese river otter and African clawless otter, as well as many less well known species. Welcome to the Otters of the World. Without sea otters, sea urchins can overpopulate the sea floor and devour the kelp forests that provide cover and food for many … They also scavenge for garbage, bringing them into close contact with people. ... A large number of species devour approximately 15% to 25% of their body-weight each day. In the long-term, the otter can play a key role in a river’s ecology, and perhaps help to check the spread of alien species such as the signal crayfish and mitten crab. ... there was little to no management of wildlife species. They are perfectly adapted to a semi-aquatic life. There are 13 species of otters, in seven genera, according to Integrated Taxonomic Information System (ITIS). In the past, there were thousands of river otters in Japan. Otters & Stillwater Fisheries Advice Otter prey and feeding behaviour By improving rivers and wetlands for otters, we are making sure that the On average an otter’s diet is 70-80% fish, although their preferred species is eels, and they also eat a wide variety of other food including amphibians (frogs and toads), reptiles, shellfish, … Ranging from climate change, to oil spills, to pollution there are many threats that have hindered sea otters from being more prosperous and being upgraded from endangered to threatened. Otters are restless, playful and secretive mammals that spend most of their time along riverbanks. As top predators, sea otters are critical to maintaining the balance of nearshore ecosystems, such as kelp forests, embayments and estuaries. Article (PDF Available) ... (southern Italy) have led to the discovery of a new species, here described as Alzoniella cervarensis n. sp. There are 13 different otter species and two varieties of sea otters. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). North American river otters are a species whose population can indicate how healthy (or not) the environment is. Family Mustelidae—Otters The mustelids are the otters, weasels, and their kin (minks, polecats, martens, wolverines, skunks, and badgers). The 10 best places to look for otters and their signs . iStock Only one otter species seems to be thriving, and that's the North American River Otter. Now international trade in the species may be banned. Even though there are more of them about otters are still hard to spot. They have stocky legs, a long, streamlined body, and a broad muzzle with prominent, sensitive whiskers. A group of otters is spotted in a lake at Taman Tasik Metropolitan Kepong. 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