what does the bible say?
The Anunnaki are mythological deities of ancient Mesopotamia. They appear in the ancient poem The Epic of Gilgamesh and in other Sumerian cuneiform tablets. There are similarities between the Anunnaki of the Mesopotamian world and the Nephilim in the Bible, but the account in the Bible was not copied from The Epic of Gilgamesh. The same is true of the flood account. This reveals a common understanding or interpretation of common events in the ancient world. In both the Bible and The Epic of Gilgamesh, supernatural beings interact with men during the time of a great flood. Because of this, we can say there is perhaps a connection between the Nephilim and the Anunnaki, but there is not enough information to be certain.