In Egyptian mythology, Nu ("Watery One") or Nun ("The Inert One") is the deification of the primordial watery abyss. In the Ogdoad cosmogony, the name nu means "abyss". The Ancient Egyptians envisaged the oceanic abyss of the Nun as surrounding a bubble in which the sphere of life is encapsulated, representing the deepest mystery of their cosmogony.In Ancient Egyptian creation accounts the original mound of land comes forth from the waters of the Nun. The Nun is the source of all that appears in a differentiated world, encompassing all aspects of divine and earthly existence. In the Ennead cosmogony Nun is perceived as transcendent at the point of creation alongside Atum the creator god.