 A dialect of the Sa'a language is spoken on Ulawa Island.First recorded sighting by Europeans was by the Spanish expedition of Álvaro de Mendaña in May 1568.More precisely the sighting and also landing in Ulawa was due to a local voyage done by a small boat, in the accounts the brigantine "Santiago", commanded by Alférez Hernando Enríquez and having Hernán Gallego as pilot.