In Sumerian mythology, Nanshe was the daughter of Enki (god of wisdom, magic and fresh water) and Ninhursag (earth and mother goddess). Her functions as a goddess were varied. She was a goddess of social justice, prophecy, fertility and fishing. Like her father, she was heavily associated with water. She held dominion over the Persian Gulf and all the animals within. Her seat of power was the Sirara temple, located in the city of Nina.
Nanshe's birth is described in the Sumerian myth 'Enki and Ninhursag.' In the tale, Enki consumes several forbidden plants under the protection of his wife. In retaliation, Ninhursag places a curse on him. Enki soon becomes crippled with ailments, and the gods are left helpless. Enlil, the powerful sky god, manages to ease Ninhursag's anger after sending a fox, a sacred animal of Ninhursag, to speak with her. She then returns to Enki's side and lifts the curse. To heal Enki, Ninhursag gives birth to several healing gods. Nanshe was meant to heal her father's neck. At the conclusion of the myth, she is betrothed to the god Nindara.
Nanshe's father, Enki, was later tasked with organizing the world and assigning every god a function. Nanshe was assigned dominion over the Persian Gulf, on which floated her father's awe inspiring sea shrine. As a secondary function, she was to ensure that shipments of fish reached the mainland. When heading onto the mainland, she sailed by barge from the Gulf. She had a strong connection with wildlife, especially birds and bats. In one hymn, she converses with ravens and pelicans, among other species.
During the time of Gudea (2144 - 2124 BC), many hymns to Nanshe appeared showing her in an elevated position in the pantheon. She was the widely worshiped goddess of social justice. She nurtured orphans, provided for widows, gave advice to those in debt, and took in refugees from war torn areas. Several other gods appeared to be under the command of Nanshe. Hendursag and Haia were her assistants. Nisaba, sometimes portrayed as Nanshe's sister, was her chief scribe.
On the first day of the new year, a festival was held at her temple. People came from all over the land to seek her wisdom and aid. Visitors were cleansed in the river of ordeals and then, if worthy, given an audience with the goddess. Nanshe settled disputes and handled court cases amongst mortals.