English: A linguistic map of the northern portion of Amami Ōshima, Kagoshima Prefecture, Japan. Each orange area indicates where people think the same language as theirs is spoken.

Data source: Shibata Takeshi 柴田武, Sanada Shinji 真田信治, Shimono Masaaki 下野雅昭 and Sawaki Motoei 沢木幹栄 (1984年) (japanese) 《 Amami Ōshima no kotoba 奄美大島のことば》、​pp. 53–55

Note: I (Nanshu) omitted the southern portion of Amami Ōshima, which was also covered by Shibata et al. (1984). As sameness groups were intricately-intertwined in the south, the original work used two maps to show the south.