Seiranesian triangle
The Seiranesian triangle is a region of the Jade Ocean with three island groups at its corners: the Kelenoan archipelago (Kelenoʻa), Nyade (x) (x) and the Ajerri islands (Ajerrʻi). It is often used as a simple way to define Seiranesia.
Outside the triangle, there are traces of Seiranesian settlement as far north as the Songdangin islands, as far east as Torcello (x), and as far south as the Vanir Islands (Toru Tihi). There was also once Seiranesian settlement along the Indragirian and Timerian coast. However, by the time the Asurans first arrived, these areas were all inhabited by non-Seiranesian groups.
Today, the most numerous Seiranesian peoples are the Ajerri, the Maheane, and the Vanirians. The native languages of this vast triangle are Seiranesian languages, which are classified by linguists as part of the Oceanic subgroup of Savao-Seiranesian. They ultimately derive from the proto-Savaonesian language spoken in Southeast Yidao 5,000 years ago. There are also numerous Seiranesian outlier islands outside the triangle in neighboring Maonesia and Micronesia, however Kelenoa overlaps with both Maonesia and the triangle.
History
Anthropologists believe that all modern Seiranesian cultures descend from a single protoculture established in the South Jade by migrant Savao-Seiranesian people (see also Lapita). There is also great evidence that Seiranesians ventured as far east as Torcello and as far south as the subantarctic islands to the south of the Vanir Islands, however none of these islands are reckoned with Seiranesia proper, as no viable settlements have survived.
In contrast to the shape of a triangle, another theory states that the geography of Seiranesian society and navigation pathways more accurately resemble the geometric qualities of an octopus with head centred on Komuele (Kelenoa) and tentacles spread out across the Jade. In Seiranesian oral tradition the octopus is known by various names such as Taumata-Fe'e-Fa'atupu-Hau (Grand Octopus of Prosperity), Tumu-Ra'i-Fenua (Beginning-of-Heaven-and-Earth) and Te Wheke-a-Muturangi (The Octopus of Muturangi).