A tāniwha or water-goblin dwelling at Hauraki. He was a tribal spirit or mascot (mauri) belonging to the Ngāti-tamatera. Ureia was decoyed to the Manakau Harbour by another tāniwha named Haumia, and was killed there after being entangled in a net of ropes.
- Shortland, Edward. (1856). Traditions and Superstitions of the New Zealanders. London: Longmans Green, p. 76.
- Tregear, Edward. (1891). Maori-Polynesian Comparative Dictionary. Wellington: Government Printer, p. 578.