Bristol Bay is the easternmost arm of the Bering Sea, at 57° to 59° North 157° to 162° West in Southwest Alaska. Bristol Bay is 400 km (250 mi) long and 290 km (180 mi) wide at its mouth. A number of rivers flow into the bay, including the Cinder, Egegik, Igushik, Kvichak, Meshik, Nushagak, Naknek, Togiak, and Ugashik.

Central Alaskan Yupʼik is one of the languages of the Yupik family, in turn a member of the Eskimo–Aleut language group, spoken in western and southwestern Alaska. Both in ethnic population and in number of speakers, the Central Alaskan Yupik people form the largest group among Alaska Natives. As of 2010 Yupʼik was, after Navajo, the second most spoken aboriginal language in the United States. Yupʼik should not be confused with the related language Central Siberian Yupik spoken in Chukotka and St. Lawrence Island, nor Naukan Yupik likewise spoken in Chukotka.