Soido is the crop-bringer of Kiwai tradition, the mythical being with whom the tales of the origin of vegetable food begin and through whom taro, yams and the other garden staples reached mankind; recent scholarship on the region describes him as a bringer of horticulture and fertility. He travels the tale-world with his wife Pekai. Although his name closely resembles that of Sido, the first man to die, Landtman's corpus indexes and narrates the two as distinct beings with different wives and different stories; the Torres Strait crop-hero Sida is, however, often compared with, and in some modern discussion partly amalgamated with, both figures.
Landtman, Gunnar. The Folk-Tales of the Kiwai Papuans (Acta Societatis Scientiarum Fennicae XLVII). Helsingfors: Printing Office of the Finnish Society of Literature, 1917.
Mitchell, R. "Cosmo-political landscapes of Torres Strait adhi and misœri stones: Closing the gap between Islander and non-indigenous perspectives." Archaeology in Oceania 58 (2023).
Landtman, Gunnar. The Kiwai Papuans of British New Guinea: A Nature-Born Instance of Rousseau's Ideal Community. London: Macmillan, 1927.