They usually stay on all four legs, but they can stand up as well but they are expert swimmers and spend a lot of time in water. DESCRIPTION: Sea otters use their rear flippers to move and their flat, muscular tails to steer. Otter - Otter - Conservation and classification: Nearly all species of otters face increasing threat as urbanization and logging continue. The species displays a small degree of sexual dimorphism, with males being larger than females. Most have sharp claws on their feet and all except the sea otter have long, muscular tails. Despite what many people believe, otters are not related to beavers. Description. Secondly, oil spills result in the death of sea otters. They have 850,000 to 1,000,000 hairs per square inch consisting of two layers, an undercoat and longer guard hairs. The Dangers Faced By Sea Otters. Individuals can weigh as much as 45 kg. 7. If the otter gets scared it may flip to its stomach or dive under the water. Otters are long and slim animals that can be longer than a meter. The sea otter has long whiskers and water-repellent coat that insulates the animal from freezing water. Sea otters eat 25 percent of their body weight in food every day. 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. The Alaskan sea otter population numbered more than 100,000 in the 1980s. Sea otters are just as full of interesting characteristics as they are full of cuteness! Sea otters, Enhydra lutris (Linnaeus, 1758), are the largest member of the Family Mustelidae (70 species of river otters, skunks, weasels, badgers, etc.) ). The sea otter, however, rarely comes ashore, according to the San Diego Zoo. Sea Otter Physical Description. The sea otters usually live near the shore waters of the North Pacific, from Japan, north to the coast of the Kamchatka Peninsula, then from Alaska down along the Pacific coast of North America to Baja, California. People affect sea otter populations through direct shootings and trapping sea otters in fishing nets. They have long, narrow bodies, with long tails and short legs. Adult males average about 75 lb (34 kg) but sometimes weigh as much as 99 lb (45 kg). It makes a shrill "wee" sound like a sea gull. All of these characteristics help the sea otter move and get around on their backs. These are ready-to-use Sea Otter worksheets that are perfect for teaching students about the sea otters which are born swimmers with long, sleek, streamlined bodies with webbed feet. They are also known as Common otters, North American River Otters or Canadian Otters, and their scientific name is. The characteristics of the otter. They have four short legs. Sea Otter Facts For Kids. Otters are long and slim animals that can be longer than a meter. The Sea Otter ranks as one of the smallest species of marine mammals. Otters make several different sounds to communicate. Sea Otter – Enhydra lutris Description. The large hind feet are broad and flipperlike. River otters range in size from about 87 to 153 cm (34-60 in.) A sea otter’s range mass can be from 14-45 kg (30.84-99.12 lbs) and range in length from 1-1.5 meters (3.28-4.92 ft) (Allerga, Rath and Gunderson, 2012). They like to slide down riverbanks and in snow. Size. Description. However, it also represents the heaviest known type of mustelid. Physical Description. Otters have long, slim bodies and relatively short limbs. They have an exceptional sense of smell, hearing, and eyesight above water and below. A baby sea otter will cry when it is left alone. The sea otter also hammers rocks against strongly gripping abalone shells to pry them off of rocks and feed on their tasty insides. They don’t use their teeth to tear food though like many other animals do. Description. The body of the sea otter is relatively long and heavy, making progress on land clumsy and slow. First, one of the biggest threats to the existence of sea otters is humans. Distinctive Characteristics The sea otter is the most derived of the otters. Alaskan sea otters are slightly larger than Californian otters. Sea otters are brown in fur color that often lightens with age . Beavers belong to the rodent family, and therefore have nothing to do with otters. Physical Description. Sea otters are incredibly clean and keep their waterproof coats in perfect condition. and 3 to 14 kg (7-31 lbs.). Another underwater superlative: The sea otter is the only marine mammal capable of flipping over boulders on the sea floor—in this case to search out food. Otter definition is - any of various largely aquatic carnivorous mammals (such as genus Lutra or Enhydra) of the weasel family that usually have webbed and clawed feet and dark brown fur. The muzzle has a set of thick vibrissae. Sea Otters have very distinct habitats. They usually stay on all four legs, but they can stand up as well but they are expert swimmers and spend a lot of time in water. River otters as a whole look quite similar to weasels. They have four short legs. The Sea Otter has two pairs of them. and are the smallest marine mammal in North America. Despite its common name, the North American river otter is equally comfortable in either coastal marine or freshwater habitats. Males weigh 22-45 kg and are 1.2-1.5 m in length.Females are slightly smaller, weighing 14-33 kg and measuring 1-1.4 m in length. This helps the sea otter swim faster. The large head has a blunt snout, and is connected to the body by a short, stocky neck. ... As a sexually dimorphic organism, male sea otters are larger in size than the females of this species. The forelimbs are short and similar to those of other otters, with a … The paws on a sea otter’s hind feet are webbed. Hissing or growling warns predators to back off. The sea otter will generally live between 10 and 20 years, and maintain a relatively constant age structure. Northern River Otters. Sea Otter - Physical characteristics. Instead they use them to crush and to grind the food. Distribution Otters have small, rounded ears, and long sensitive whiskers to help them feel the vibrations of their prey. It is 40–65 inches (100–160 cm) long and weighs It has short tail and webbed-feet with retractable front claws. The nostrils and ears of sea otters close in the water. Adult male California sea otters average 29 kg in mass, while females average 20 kg. 5. In a study done in Alaska, it was found that the most common age range was pups (0-1 years of age) as shown in figure 3. Protection has permitted them to increase and reoccupy much of their former range. Fur: A sea otter's fur is the thickest and finest of any mammal. Description . Sea otters are found in two areas : The Pacific coasts of Russia and Alaska, and along the central California coast. Unlike most other animals, otters are playful even as adults. Sea otters’ diet includes sea urchins, crabs, mussels, and clams, which they’re known to … Sea otter, (Enhydra lutris), rare, completely marine otter of the northern Pacific, usually found in kelp beds. Since the 1990s, the southwestern stock of Alaskan sea otters has experienced a dramatic (up to 70% population) decline, most likely due to increased predation by killer whales. Sea Otters :: MarineBio Video Library. They belong to the weasel family. A rescued sea otter pup is taken to Alaska SeaLife Center to be treated. Otter Physical Characteristics. The sea otter uses air trapped between their hairs to keep themselves insulated in cold waters. The fur of the sea otter is the densest of all mammals at about 350,000 to 1,000,000 hairs per square inch, compared to dogs that only have 1,000 to 60,000 hairs per square inch. The sea otter’s fur also is designed to trap air to further insulate it from the cold water and to provide additional buoyancy. Sea otter is the heaviest and the second smallest aquatic member of weasel family. The largest river otter is the North American river otter, ranging from 100 to 153 cm (39-60 in. Sea otters are carnivores in the family Mustelidae—a group of animals that also includes terrestrial and semi-aquatic forms such as weasels, badgers, skunks, fishers, minks, and river otters.Sea otters are the only fully aquatic form of otters, but they share features with the others such as thick fur and short ears. They can be up to 100 pounds so they are the heaviest of all species. Sea otters catch the same shellfish, sea urchins, crabs, clams, and abalone, that indigenous peoples in Alaska and Canada need to eat. Lacking blubber, otters have amazingly thick fur to assist in retaining heat. Sea otters wrap themselves in kelp or hold hands when sleeping to prevent drifting. Floating on its back, it opens mollusks by smashing them on a stone balanced on its chest. Just about everyone that seems them has a comment in that regard to make. Adult male Alaskan otters weigh 27 to 39 kg, while females weigh 16 to 27 kg. They have very thick fur – near about 250,000 to one million hair per square inch. Sea otters get around with their sandpaper like paws, webbed feet, and flat tails. This information shows that the sea otter … Here are five fun facts you otter know: Sea otters have the densest fur in the animal kingdom, with up to one million hairs per square inch of their body! These river otters are also a carnivorous mammal belonging to the Mustelidae family, and were first described in 1777 by the German naturalist Johann Christian Daniel von Schreber.. Main Characteristics Description & Behavior. Many sea otters live near rocky sea bottoms and shorelines, where marine communities are extremely diverse. Their most striking anatomical features are the powerful webbed feet used to swim, and their seal-like abilities holding breath underwater. Let's find out about the description, size, lifespan, habitat and much more in Sea Otter … This is a fantastic bundle which includes everything you need to know about sea otters across 25 in-depth pages. Sea otters have no insulating fat, but trap air under their coasts as insulation. Otters are a species that belongs to the mustelids, meaning they’re related to ferrets, badgers, and minks. ... All of the species except the Sea Otter feature three pairs of powerful incisors. The Sea Otter has a small round face that is absolutely adorable. Otters are found throughout Africa, North and South America, Europe, and Asia. Photo by U.S. Sea Otter Worksheets. Fish and Wildlife Service. Otters are mammals that live in and around water. The North American river otter (Lontra canadensis) is a semiaquatic mammal in the weasel family.While it may simply be called the "river otter" in North America (to distinguish it from the sea otter) there are other river otter species throughout the world. Sea Otter (Enhydra lutris), largest and most marine weasel, lives exclusively in shallow seas of the N Pacific, formerly from Japan to California.Ruthless hunting for their valuable pelts almost exterminated sea otters before 1900. Description. A few survived in Alaska and California. Its ears and nostrils are closed down in water. They have a thick fur coat that keeps them warm even in freezing water. Description of the River Otter. 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