Origin: Tradition of the San Cristoval Island in Melanesia
About Agunua / Hatuibwari
Aguna is an alternative name for Hatuibwari, the great cosmic serpent found in the traditions and myths of Melanesia, specifically the people of the San Cristoval Island.  She is the primordial ancestor of the human race. 
Aguna / Hatuibwari is a vast serpent with the upper body resembling a human and with two beautiful, enormous wings. Her head has four eyes, and her torso has four pendulous breasts, which serve to feed and to nourish all the living. 
For more information on footnotes and references, please see the bibliography.