The Oshika peninsula is located within the Miyagi prefecture, one of the 47 prefectures of Japan, and has an extension of about 20 km of coastline, comprised of small bays dominated by rocky or sandy bottom environments. Rivers flow to the ocean from forests with an elevation of up to 500 m, providing nutrient-rich waters to coastal inlets, making them excellent sites for fishing and aquaculture activities like oyster and seaweed farming. Communities are generally isolated from one another, and local festivals and other events are considered important opportunities for the creation and reaffirmation of community social ties in the region.