In the Sumerian flood myth, the survivor who preserves life in a boat is named Ziusudra.
Ziusudra is the central human figure in the Eridu Genesis, a Sumerian account preserved in fragmentary cuneiform tablets. The gods decide to send a devastating flood, while the god Enki warns Ziusudra and instructs him to build a large boat. Ziusudra survives and offers a sacrifice after the waters recede.
The Eridu Genesis is one of the earliest surviving flood narratives. Its story is related to later Mesopotamian accounts, including the Atrahasis tradition and the Flood Tablet in the Epic of Gilgamesh. Scholars compare these texts with Genesis, but they do not treat the names or details as interchangeable.
Ziusudra is sometimes described as the Sumerian counterpart of Noah. That comparison is useful for study, but the Sumerian myth has its own gods, language, textual history, and narrative structure.