The approximately 450 Oceanic languages are a branch of the Austronesian languages. The area occupied by speakers of these languages includes Polynesia, as well as much of Melanesia and Micronesia. Though covering a vast area, Oceanic languages are spoken by only two million people. The largest individual Oceanic languages are Eastern Fijian with over 600,000 speakers, and Samoan with an estimated 400,000 speakers. The Gilbertese (Kiribati), Tongan, Tahitian, Māori and Tolai (Gazelle Peninsula) languages each have over 100,000 speakers. The common ancestor which is reconstructed for this group of languages is called Proto-Oceanic (abbr. "POc").
According to Lynch, Ross, & Crowley (2002), Oceanic languages often form linkages with each other. Linkages are formed when languages emerged historically from an earlier dialect continuum. The linguistic innovations shared by adjacent languages define a chain of intersecting subgroups (a linkage), for which no distinct proto-language can be reconstructed.[2]
Lynch, Ross, & Crowley (2002) propose three primary groups of Oceanic languages:
Roger Blench (2014)[4] argues that many languages conventionally classified as Oceanic are in fact non-Austronesian (or "Papuan", which is a geographic rather than genetic grouping), including Utupua and Vanikoro. Blench doubts that Utupua and Vanikoro are closely related, and thus should not be grouped together. Since each of the three Utupua and three Vanikoro languages are highly distinct from each other, Blench doubts that these languages had diversified on the islands of Utupua and Vanikoro, but had rather migrated to the islands from elsewhere. According to him, historically this was due to the Lapita demographic expansion consisting of both Austronesian and non-Austronesian settlers migrating from the Lapita homeland in the Bismarck Archipelago to various islands further to the east.
non-Austronesian, with some other languages traditionally classified as Austronesian may perhaps actually be non-Austronesian are spoken in the Solomon Islands and New Britain (various Meso-Melanesian languages).
Word order
Word order in Oceanic languages is highly diverse, and is distributed in the following geographic regions (Lynch, Ross, & Crowley 2002:49).
^Mark Donohue and Tim Denham, 2010. Farming and Language in Island Southeast Asia: Reframing Austronesian History. Current Anthropology, 51(2):223–256.