In Monterey Bay, California, researchers found that each sea otter tends to specialize in only a few types of the more than 50 available invertebrates. Common Sea Otter. How to Get Rid of Otters in the River Otters are a playful bunch, enjoying social interactions and daily routines with obvious glee. It’s a member of the weasel family, and the only marine mammal that doesn’t have blubber to keep it warm. However, this hasn’t always worked in their favor. In some areas where two or more species overlap, one may be a marine species and the other a freshwater species, such as the marine and southern otters of southern South America. A raft typically contains 10 to 100 animals, but the largest raft ever seen contained over 2000 sea otters. River otters forage alone or in pairs. This is one of the main reasons why they have been so easy to capture and to kill for their fur over the years. Description: The bigger, generally older subset … They will fight when necessary but they aren’t known to attack unprovoked. The otter closes its nostrils and small ears when submerged. Biologists found remains of sunfish, carp and shad most often in droppings collected in northwestern Illinois. The elusive otter is one of our top predators, feeding mainly on fish (particularly eels and salmonids), waterbirds, amphibians and crustaceans. iNaturalist.com is a citizen science project that allows us to track the location of species we are studying, such as otters, and invasive species within our park. Without it they will experience high levels of stress. Otters have their cubs in underground burrows, known as 'holts'. Sign surveys started in 2009 and tell us which habitats otters use in the park, over time. Otters have a very unique feature that all species have exhibited – the ability to use tools to open up food. In contrast to the European otter, the North American river otter has a longer neck and narrower face. North American river otters, also called Canadian otters, have long, muscular, streamlined bodies with short legs and fully webbed feet bearing non-retractable claws. Because otters are so smart, and if you are looking for a humane approach to trapping and releasing them, your best options are either a spring load trap or a gravity trap. Spotted-necked otter. Otters spend a large amount of time in the water, yet they still have fur. There is some debate as to whether the Congo clawless otter is a separate species to the African clawless otter (A.capensis), but it is considered a separate species by the IUCN Otter Specialist Group. Many researchers believe that there may be more species of Otters out there. While it’s hard to paint with a wide brush, it is fair to say that many of … This is due to the severe damage that it creates for their coat. Also known as the Cape clawless otter, the African clawless otter is found through much of sub-Saharan Africa. Otter Species. This last might be because the tail of a neotropical otter is sometimes as long as, or longer than, its body. Thanks! Their varied and adaptable diets mean they may inhabit any unpolluted body of fresh water, including lakes, streams, rivers, and ponds, as long as there are adequate food supplies. Check out our iNaturalist projects: Minnesota Metro Otter Survey This species once had an extensive distribution from the Cauquenes and Cachapoal Rivers to the Magellan region in Chile, but is now restricted to seven isolated areas from Cautín to Futaleufú due to overhunting. There are several types of traps that have been designed for otters. There are 13 known species of Otters left in the world with at least one that was removed from the list due to extinction. If one of your favourite foods includes shellfish, you’re going to need … Until 1998, it was thought to have been extinct, but small populations have been discovered since then. As of 2011, they can be found in every English county, including some urban rivers. That’s because this body type directly borrows from north American otters who are known for this trait . An isolated population of the species is also found in the marshes of Iraq indicating the range must once have been wider. They spend most of their time in the water, whereas other otters spend much of their time on land. Types of Sea Otters. They have been seen using rocks to smash shells when they can’t get them to open with their powerful claws. A good portion of African clawless otter’s hunting is done under the water, particularly shallow water. They have been able to adjust to new environments due to their land being taken over. In the past, this species was widely employed throughout its range by fishermen, with trained animals being highly valued. Its diet consists of crabs, lobsters, insects, frogs, and a wide array of fish species. Generally, they can be divided into three categories: body grip traps, paw hold traps, and live cages. Due to the large volume of food they consume, otters can prove very problematic for fishermen or private land owners. Meet the adorable members of the otter family from around the world. This species can grow quite large, almost as big as the giant otter, and weigh up to 18kg. It has a stocky body, short legs, webbed feet, and a long tail. This top OtterBox is the near-perfect middle ground for people who desire high-level protection against damages from bumps, scratches, drops, and more, but who prefer not to have a bulky case that won’t let their phone fit in their pocket. The neotropical otter is also called the South American river otter, the long-tailed otter, and the La Plata otter. Otters … Instead the sea otter relies on its thick fur to keep its body temperature around 100 degrees. Excellent and lithe swimmers, the young are in the water by 10 weeks of age. On the Shetland Islands, some otters have been known to abandon fishing in favour of rabbit hunting. Sea otters are native to the coasts of the northern and eastern North Pacific Ocean. Discover more fascinating facts about giant otters in our fact file by the International Otter Survival Fund. Its scientific name is Emhydra Lutris Lutris Linneo, and it is also called Asian sea otter. There are three known subspecies of sea otters, which differ only by their body´s size and some other individual characteristics of their teeth and skulls. Otter - Otter - Conservation and classification: Nearly all species of otters face increasing threat as urbanization and logging continue. 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