The seasonally organized economy of these peoples derived from that of their Thule ancestors and focused on the exploitation of both sea and land resources. Traditional peoples generally followed the Thule subsistence pattern, in which summers were spent in pursuit of caribou and fish and other seasons were devoted to the pursuit of sea mammals, especially seals; food was also stored for consumption during the deepest part of winter. There were exceptions to this pattern, however. People of the Bering Strait islands, for instance, depended almost entirely on sea mammals, walrus being very important. In the specialized Alaskan whaling villages between the Seward Peninsula and Point Barrow, caribou and seals were outweighed as food resources by bowhead whales (Baleana mysticetus; see right whale). In the Brooks Range of northern Alaska, some people were year-round caribou hunters who also depended on traded sea-mammal oil as a condiment and for heat. In the Barren Grounds, west of Hudson Bay, some groups used no sea products at all, illuminating their snow houses with burning caribou fat and heating these homes with twig fires.

Most shelter in winter was in substantial semisubterranean houses of stone or sod over wooden or whalebone frameworks. In Alaska, save for the far north, heat was provided by a central wood fire that was placed beneath a smoke hole; throughout the north and in Greenland, a large sea-mammal oil lamp served the same purpose. In 19th-century Siberia and on St. Lawrence Island, the older semisubterranean house was given up for a yurt-like structure with sod walls and a walrus-hide roof.

In winter the people nearest the Arctic Ocean relied on the snow house—generally referred to as an igloo (iglu or igluvigaq, depending on dialect)—with most groups moving onto fresh ice fields in search of seals during that season. Caribou hunters and lake and river fishermen used the snow house on land. The caribou specialists of northern Alaska often lived through the winter in double-layered dome-shaped tents, heated like the coastal snow houses with an oil lamp; these dwellings commonly housed an extended family. In East and West Greenland, communal dwellings were built of stone, housed as many as 50 people from different kin groups, and were arranged such that each nuclear family had its own interior space and oil lamp. Communities in the far north of Greenland chose to use smaller stone houses designed to shelter nuclear families.

Among the Yupiit a special large semisubterranean house, called a kashim by the Russians, was used for public and ceremonial occasions and as a men’s residence. The kashim was the place where men built their boats, repaired their equipment, took sweat baths, educated young boys, and hosted community dances. Women had their own homes in which they worked and cared for their children. In many cases the women’s homes were connected to one another and to the kashim by a system of tunnels, not all of them generally known; a number of folktales tell how canny women saved their families from raids by directing them to hidden tunnels that opened far away from the village.

The institution of the kashim was stronger to the south of the Bering Strait than to its north. Kashims did not exist on St. Lawrence Island or in Siberia, nor were they found east of Point Barrow until the late 19th or early 20th century, when they began to be used by Inuit living near the Mackenzie River.

Both the single-cockpit kayak and the larger open umiak (umiaq or umiat) were virtually universal, although they were not used the same way everywhere. The kayak was generally used as a seal-hunting craft, but, in the places where open-water sealing was limited, it was used to intercept migrating caribou as they crossed lakes and rivers. The umiak was usually a freight vessel, often rowed by women facing backward, but in whaling and walrus-hunting regions it was used as a hunting boat and paddled by a male crew facing forward. Winter transport was by sled, pulled by dogs or by both dogs and people. In most regions the number of sled dogs—which ate the same food as humans and thus were a burden in times of want—was limited, an exception being the few areas in which relative plenty was provided by whales or migrating salmon.

The bow and arrow were the standard tools of land hunters. Seals and walrus were taken from shore with a thrown harpoon tipped with a toggling head—an asymmetrical point with a line affixed, shaped to twist sidewise in the wound as the detachable shaft pulled loose. Kayak-based seal hunters used specialized harpoons with fixed barbs rather than toggling heads; these were often cast with the spear-thrower or throwing board, a flat trough of wood that cradled the butt of the dart and formed an extension of the thrower’s arm, increasing the velocity of the thrown projectile. The whaling umiak was manned by a professional crew; it was directed by the boat’s owner, or umialik, and a marksman who wielded a heavy harpoon with a detachable toggling head and line attached to sealskin floats. In Quebec, whales were harpooned from kayaks or run aground in shallow bays.

The flexibility of movement required by the seasonally varied subsistence quest was supported by the flexible organization of society. Individuals obtained psychological and material support from their kindred and tended to avoid people who were not kin, but there were devices for creating kinlike relationships that could extend the social and territorial sphere in which an individual could move in safety and comfort. These included a variety of institutionalized relationships; people bearing the same name as a relative might be treated as if they held the same relation, and trading partners, song partners, meat-sharing partners, and partners created by the temporary exchange of spouses might also be treated approximately as relatives.

Generally, American Inuit recognized kin on both the paternal and maternal sides of the family to about the degree of second cousin. Marriage with cousins was frowned upon by most groups although permitted by some; certain groups also emphasized paternal kin over maternal. On St. Lawrence Island and in Siberia, however, there were patrilineal clans—named groups of all people related in the male line. In Siberia marriage could not be contracted by two members of the same clan, although on St. Lawrence such a rule was not enforced. There the walrus- and whale-hunting crews were composed of clansmen, the senior male became clan chief, and the chief of the strongest local clan acted as the village chief.

Among other groups there was no formal position of chief, the closest to an exception being the umialik of the Inupiat. In addition to owning the boat used for whaling, the umialik was the employer of a whaling crew, recruiting his men for their professional ability and acting as benefactor to them and their families. In many villages each umialik and his crew controlled a kashim. The title of umialik was also used in some villages not devoted to whaling, especially in the northern Alaskan interior, where the umialik was the organizer of a caribou-hunting team. The position of umialik was not inherited but was gained by skilled entrepreneurs, and it brought no control over anyone but the umialik’s own crew (and then only to the extent that an individual chose to remain a crew member). South of the Bering Strait the title was rarely used.

Religious beliefs were based on animism; all things—animate or otherwise—were believed to have a living essence. Thus, all humans, animals, plants, and objects had souls or spirits, which might be related to one another in a hereafter, details of the location of which varied from group to group. Courtesies given to freshly killed animals promoted their reincarnation as new animals of the same species. The souls of humans were subject to interference from other spirits, and soul loss meant illness or even death. There also were ideas of human reincarnation. The name of a deceased person was given to a child who “became” that person by being addressed with kinship terms appropriate to the deceased.

Traditionally, all people were in contact with the spirit world; they carried amulets of traditional or individual potency, experienced dreams, devised songs or other words of power, and achieved special relationships with particular spirit-beings. Men and women who were especially adept at such contact became shamans; they were called on to cure the sick by recovering lost soul-stuff, to foretell the future, to determine the location of game, and so forth—all with the help of powerful spirit familiars.

Shamans were also expected to contact a few more strongly personified spirit-beings, such as the female being (whose name and attributes varied from group to group) who governed important land or sea mammals; when game was scarce, the shaman might cajole her into providing more bounty. In Greenland the shaman was also an entertainer whose séances, escape tricks, and noisy spirit helpers could enliven a long winter’s night in the communal house (see shamanism).

Sedentary peoples: the southern Yupiit and the Unangan (Aleuts)

These groups made use of the sod-covered and semisubterranean house, the skin-covered kayak and the umiak, and fishing and hunting apparatus similar to those of the northern Yupiit and the Inuit. Yet, like many neighbouring Northwest Coast Indians, they focused almost exclusively on aquatic resources and had a hierarchical society comprising formal chiefs (apparently inherited in the male line), other elites, commoners, and a class of enslaved people that was generally composed of war captives. Although the Yupik-speaking people of the Kodiak region maintained kashims that seem to have functioned generally like those of the north and were said to be “owned” by local chiefs, the Unangam Tunuu- (Aleut-) speaking groups had no similar structure. Unfortunately, the region’s conquest by Russian fur hunters eradicated many details of Indigenous life before they could be thoroughly recorded.