What is "eingana"

Eingana is a creator goddess in Australian Aboriginal mythology. Otherwise known as the "Dreamtime Snake" she is the mother of all water animals, and humans. She is a snake goddess of death who lives in the Dreamtime. She has no vagina; she simply grew in size and, unable to give birth to the life inside her, had the god Barraiya open a hole with a spear near her anus so that labour could commence. Eingana holds a sinew that is attached to every living thing; if she lets go of one, the attached creature dies.