There are 13 species of otter in four genera, all of which are relatives of the weasel, but there is only one species of sea otter. The Baikal seal, Lake Baikal seal or nerpa (Pusa sibirica), is a species of earless seal endemic to Lake Baikal in Siberia, Russia. The Baikal seal is the only seal that lives exclusively in freshwater, and it's found nowhere else. However, your question somehow dropped into the electric eel category. They prefer habitats that are very muddy. When not actively feeding, seals will haul themselves out of the water and onto a preferred resting site. They use their whiskers for locating prey in these predominantly turbid waters. Seal diet. There are also osmoregulators, which are fish that can live in both salt and fresh water. Whales are marine mammals and make up part of the cetacean family which includes all species of … Seals eat primarily fish. The more diverse river otters live primarily in freshwater rivers and streams, but are also found in coastal saltwater areas. However, since freshwater is uninhabitable, these unique sharks have developed some evolutionary adaptations to succeed in their environment. Sea otters only exist in oceanic environments. As the warmer weather comes in they find more predators in their natural habitat. But some will eat snow to get fresh water. The others are the subspecies or colonies of regular saltwater seals. Seals can feel the slightest movements in the water. They like to lie in the sun while resting on a sandbar or beach. And is it any wonder? Nevertheless, you can spot them regularly on the surface. Harbor, ringed, ribbon, spotted and bearded seals, as well as northern fur seals and Steller sea lions live in the Arctic region. How can sea mammals drink saltwater? Like the Caspian seal, it is related to the Arctic ringed seal. Electric eels are freshwater fish that live in lakes and streams in South America. So if you think the ocean is the only place where sharks live, think again. How long whales live in fresh water has become a matter of some debate with several visits of whales to fresh water environments. It is also the only exclusively freshwater pinniped species. The Baikal seal is one of the smallest true seals and the only exclusively freshwater pinniped species. Electric eels are not true eels. Seals are completely adapted to life under water. Some species are designed to live where it is very cold. Some species live in inland lakes in Siberia, Russia, and Finland. SEALS drink seawater at least on occasion. No, some fish live in salt water and some live in fresh water. True seals inhabit all oceans, except the Indian Ocean. While the seals inhabiting Iliamna Lake are believed to be harbor seals (Phoca vitulina) exact species identification The interest in this matter first peaked when Humphrey the humpback whale took a detour into the Sacramento River in … This means they can be eaten as well as their food supplies being shared with other animals. Between prehistoric sharks and a few rare species still living today, sharks have also been known to live in freshwater. If there is one body of freshwater … The only true freshwater seal species is the Baikal seal, locally named nerpa . Seals in Freshwater Seals may spend several days at sea and travel up to 50 kilometres in search of feeding grounds but will also swim some distance upstream into freshwater in large rivers. Seals live in the oceans of both hemispheres and are mostly confined to polar, sub-polar, and temperate climates, with the exception of the more tropical monk seals. Iliamna Lake freshwater seals make up one population of only five in the northern hemisphere; Lake Baikal and Lake Lagoda in Russia, Lake Saimaa in Finland, and Lac de Loups in Canada. The freshwater seals are the species of seals which live exclusively in freshwater bodies. Seals are found along most coasts and cold waters, but a majority of them live in the Arctic and Antarctic waters. Although whales share the ocean with fish and other freshwater/saltwater animals they are very different from these animals and require different circumstances in order to survive in the ocean. Global warming is another concern for seals.