Ringed seals are the smallest and most abundant member of the seal family that live in the Arctic and Sub-Arctic regions.
 The average life span of a ringed seal is 40 years, with a diet based mainly on Arctic cod and planktonic crustaceans.
 Typically about 5 ft long, the ringed seal is known to be solitary with their main predator being polar bears. Recently, however, the biggest predator to ringed seals has been the changing temperature in the Arctic and the detrimental changes to sea ice that follow.
 With declines in snowpack and sea ice due to warming ocean and atmospheric temperatures, survival has become tougher for ringed seals in the Arctic and Sub-Arctic regions.
 Yet ringed seals are also potentially projected to thrive due to warming, considering the early extinction of their predators.
 Climate change is sure to change the fate of all ringed seals in the coming years for better or worse.
Vastitas Borealis (Latin, 'northern waste' ) is the largest lowland region of Mars.
 It is in the northerly latitudes of the planet and encircles the northern polar region.
 Vastitas Borealis is often simply referred to as the northern plains , northern lowlands or the North polar erg of Mars.
 The plains lie 4–5 km below the mean radius of the planet, and is centered at .
 To the north lies Planum Boreum.
 A small part of Vastitas Borealis lies in the Ismenius Lacus quadrangle.
The Baikal seal, Lake Baikal seal or nerpa ("Pusa sibirica"), is a species of earless seal endemic to Lake Baikal in Siberia, Russia.
 Like the Caspian seal, it is related to the Arctic ringed seal.
 The Baikal seal is one of the smallest true seals and the only exclusively freshwater pinniped species.
 A subpopulation of inland harbour seals living in the Hudson's Bay region of Quebec, Canada ("lac de loups marins" harbour seals), the Saimaa ringed seal (a ringed seal subspecies) and the Ladoga seal (a ringed seal subspecies) are found in fresh water, but these are part of species that also have marine populations.
 It remains a scientific mystery how the seals originally came to Lake Baikal, hundreds of kilometers from any ocean.
The Arctic ( or ) is a polar region located at the northernmost part of Earth.
 The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Alaska (United States), Northern Canada, Finland, Greenland (Denmark), Iceland, Norway, Russia and Sweden.
 Land within the Arctic region has seasonally varying snow and ice cover, with predominantly treeless permafrost-containing tundra.
 Arctic seas contain seasonal sea ice in many places.
Quark Expeditions is the leader in Arctic and Antarctic expedition travel.
 The adventure travel company offers Polar Region expeditions aboard purpose-built small expedition ships and icebreakers carrying fewer than 200 passengers, and on unique land-based adventures.
 Each polar expedition ship features ice-strengthened hulls for superior navigation in ice-packed polar waters, and Zodiacs (inflatable landing craft) for safe, comfortable transfers ship to shore, allowing passengers to reach some of the world’s most remote places.
 Expedition team members are experts in various disciplines including polar history, biology, geology, photography, ornithology, glaciology and more.
 Additionally, many expeditions feature renowned special guests and speakers.
 Adventure activities are offered on each expedition.
The ringed seal ("Pusa hispida" or "Phoca hispida"), also known as the jar seal and as netsik or nattiq by the Inuit, is an earless seal (family: Phocidae) inhabiting the Arctic and sub-Arctic regions.
 The ringed seal is a relatively small seal, rarely greater than 1.5 m in length, with a distinctive patterning of dark spots surrounded by light grey rings, hence its common name.
 It is the most abundant and wide-ranging ice seal in the Northern Hemisphere: ranging throughout the Arctic Ocean, into the Bering Sea and Okhotsk Sea as far south as the northern coast of Japan in the Pacific, and throughout the North Atlantic coasts of Greenland and Scandinavia as far south as Newfoundland, and include two freshwater subspecies in northern Europe.
 Ringed seals are one of the primary prey of polar bears and have long been a component of the diet of indigenous people of the Arctic.
The earless seals or true seals are one of the three main groups of mammals within the seal lineage, Pinnipedia.
 All true seals are members of the family Phocidae .
 They are sometimes called crawling seals to distinguish them from the fur seals and sea lions of the family Otariidae.
 Seals live in the oceans of both hemispheres and, with the exception of the more tropical monk seals, are mostly confined to polar, subpolar, and temperate climates.
 The Baikal seal is the only species of exclusively freshwater seal.
The Centre for Polar Observation & Modelling (CPOM) is a centre for research into polar region processes which may affect: polar atmosphere and ocean circulation; the Earth's albedo; and global sea levels.
 It is funded by the Natural Environment Research Council, a UK Research Council.
The Saimaa ringed seal ("Pusa hispida saimensis") is a subspecies of ringed seal ("Pusa hispida").
 They are among the most endangered seals in the world, having a total population of only about 320 individuals.
 The only existing population of these seals is found in Lake Saimaa, Finland (hence the name).
 The population is descended from ringed seals that were separated from the rest when the land rose after the last ice age.
 This seal, along with the Ladoga seal and the Baikal seal, is one of the few living freshwater seals.
Sally Poncet (born 1954) is an Australian-born scientist and adventurer who has explored and studied the Antarctic region since 1977.
 Her specialty is birds and she made extensive studies of albatross and their habitats for the British Antarctic Survey.
 She has written guidebooks on preservation of the flora and fauna of South Georgia and received numerous awards and honors, including the Blue Water Medal, the Fuchs Medal and the Polar Medal for her contributions to understanding the southern polar region.

Question: Where is the polar region which Ringed seals live in located at
Answer: northernmost part of Earth