The nostrils and ears of sea otters close in the water. Fur: A sea otter's fur is the thickest and finest of any mammal. and are the smallest marine mammal in North America. Otter - Otter - Conservation and classification: Nearly all species of otters face increasing threat as urbanization and logging continue. Secondly, oil spills result in the death of sea otters. 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. ... All of the species except the Sea Otter feature three pairs of powerful incisors. 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. Distinctive Characteristics The sea otter is the most derived of the otters. A rescued sea otter pup is taken to Alaska SeaLife Center to be treated. Sea otters, Enhydra lutris (Linnaeus, 1758), are the largest member of the Family Mustelidae (70 species of river otters, skunks, weasels, badgers, etc.) Otters are long and slim animals that can be longer than a meter. If the otter gets scared it may flip to its stomach or dive under the water. Northern River Otters. They belong to the weasel family. Adult male California sea otters average 29 kg in mass, while females average 20 kg. Most have sharp claws on their feet and all except the sea otter have long, muscular tails. Sea otters’ diet includes sea urchins, crabs, mussels, and clams, which they’re known to … Sea otters are found in two areas : The Pacific coasts of Russia and Alaska, and along the central California coast. ... As a sexually dimorphic organism, male sea otters are larger in size than the females of this species. This information shows that the sea otter … They don’t use their teeth to tear food though like many other animals do. 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 They have four short legs. Photo by U.S. Fish and Wildlife Service. Otters are mammals that live in and around water. Sea otters wrap themselves in kelp or hold hands when sleeping to prevent drifting. River otters as a whole look quite similar to weasels. 5. The sea otter’s fur also is designed to trap air to further insulate it from the cold water and to provide additional buoyancy. They have long, narrow bodies, with long tails and short legs. 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. Otters make several different sounds to communicate. 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. This helps the sea otter swim faster. Physical Description. They have four short legs. The characteristics of the otter. 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. 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. 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. Many sea otters live near rocky sea bottoms and shorelines, where marine communities are extremely diverse. Sea Otter Facts For Kids. The species displays a small degree of sexual dimorphism, with males being larger than females. Their most striking anatomical features are the powerful webbed feet used to swim, and their seal-like abilities holding breath underwater. Physical Description. Otter Physical Characteristics. The sea otter uses air trapped between their hairs to keep themselves insulated in cold waters. The largest river otter is the North American river otter, ranging from 100 to 153 cm (39-60 in. Otters have long, slim bodies and relatively short limbs. The sea otter, however, rarely comes ashore, according to the San Diego Zoo. Its ears and nostrils are closed down in water. 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. A few survived in Alaska and California. They can be up to 100 pounds so they are the heaviest of all species. Adult male Alaskan otters weigh 27 to 39 kg, while females weigh 16 to 27 kg. A baby sea otter will cry when it is left alone. Sea Otter Worksheets. The Sea Otter has a small round face that is absolutely adorable. 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. Individuals can weigh as much as 45 kg. Otters are long and slim animals that can be longer than a meter. However, it also represents the heaviest known type of mustelid. 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. 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. Sea Otter Physical Description. 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. The large hind feet are broad and flipperlike. They have an exceptional sense of smell, hearing, and eyesight above water and below. Sea Otter – Enhydra lutris Description. The Dangers Faced By Sea Otters. The Sea Otter has two pairs of them. Sea Otter - Physical characteristics. DESCRIPTION: Sea otters use their rear flippers to move and their flat, muscular tails to steer. The sea otter also hammers rocks against strongly gripping abalone shells to pry them off of rocks and feed on their tasty insides. Beavers belong to the rodent family, and therefore have nothing to do with otters. Sea otter, (Enhydra lutris), rare, completely marine otter of the northern Pacific, usually found in kelp beds. Description of the River Otter. The Sea Otter ranks as one of the smallest species of marine mammals. The body of the sea otter is relatively long and heavy, making progress on land clumsy and slow. Hissing or growling warns predators to back off. Description. Despite what many people believe, otters are not related to beavers. Sea otter is the heaviest and the second smallest aquatic member of weasel family. They like to slide down riverbanks and in snow. Floating on its back, it opens mollusks by smashing them on a stone balanced on its chest. Description. The paws on a sea otter’s hind feet are webbed. Sea Otters :: MarineBio Video Library. River otters range in size from about 87 to 153 cm (34-60 in.) The sea otter has long whiskers and water-repellent coat that insulates the animal from freezing water. Otters are found throughout Africa, North and South America, Europe, and Asia. Otters will whistle or whine when upset or frustrated. The sea otter will generally live between 10 and 20 years, and maintain a relatively constant age structure. Otters have small, rounded ears, and long sensitive whiskers to help them feel the vibrations of their prey. 7. The large head has a blunt snout, and is connected to the body by a short, stocky neck. Otters are a species that belongs to the mustelids, meaning they’re related to ferrets, badgers, and minks. Unlike most other animals, otters are playful even as adults. Despite its common name, the North American river otter is equally comfortable in either coastal marine or freshwater habitats. 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). Distribution Protection has permitted them to increase and reoccupy much of their former range. ). 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! Sea Otters have very distinct habitats. They have a thick fur coat that keeps them warm even in freezing water. Description. Sea otters eat 25 percent of their body weight in food every day. Description. Description . Sea otters are incredibly clean and keep their waterproof coats in perfect condition. They have very thick fur – near about 250,000 to one million hair per square inch. Sea otters are just as full of interesting characteristics as they are full of cuteness! It is 40–65 inches (100–160 cm) long and weighs Just about everyone that seems them has a comment in that regard to make. Sea otters get around with their sandpaper like paws, webbed feet, and flat tails. Sea otters catch the same shellfish, sea urchins, crabs, clams, and abalone, that indigenous peoples in Alaska and Canada need to eat. Let's find out about the description, size, lifespan, habitat and much more in Sea Otter … The Alaskan sea otter population numbered more than 100,000 in the 1980s. People affect sea otter populations through direct shootings and trapping sea otters in fishing nets. This is a fantastic bundle which includes everything you need to know about sea otters across 25 in-depth pages. Instead they use them to crush and to grind the food. It has short tail and webbed-feet with retractable front claws. Alaskan sea otters are slightly larger than Californian otters. Sea Otter is the heaviest of the otters, reaching a maximum weight of 45 kg. 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. and 3 to 14 kg (7-31 lbs.). Sea otters have no insulating fat, but trap air under their coasts as insulation. All of these characteristics help the sea otter move and get around on their backs. It makes a shrill "wee" sound like a sea gull. Sea otters are brown in fur color that often lightens with age . 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. Description & Behavior. The forelimbs are short and similar to those of other otters, with a … They are also known as Common otters, North American River Otters or Canadian Otters, and their scientific name is. Adult males average about 75 lb (34 kg) but sometimes weigh as much as 99 lb (45 kg). Lacking blubber, otters have amazingly thick fur to assist in retaining heat. 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