L1 users: 7,000 (Glennon 2014), increasing. 5,000 Uanuleik, 1,000 Sirouatan, and 1,000 Pinipel (Glennon 2014).
Bougainville province: Nissan islands.
5 (Developing). Statutory language of provincial identity in Bougainville Autonomous Region (2007, Education Plan, Section 1.1.3), not yet implemented (2012).
Uanuleik, Pinipel (Pinipin), Sirouatan. Not closely related to other languages. Lexical similarity: 83% between the main dialects (Glennon 2014).
Latin script [Latn].
Little acculturation. Christian.