Cosmic ocean

A cosmic ocean, primordial waters, or celestial river is a mythological motif that represents the world or cosmos enveloped by a vast primordial ocean. Found in many cultures and civilizations, the cosmic ocean exists before the creation of the Earth. From the primordial waters the Earth and the entire cosmos arose. The cosmic ocean represents or embodies chaos. The concept of a watery chaos also underlies the widespread motif of the worldwide flood that took place in early times. The emergence of earth from water and the curbing of the global flood or underground waters are usually presented as a factor in cosmic ordering.

In creation myths, it is common for the primordial ocean to be separated into upper and lower bounds of water (i.e. cosmic bodies of water located above the sky or below the earth) by the creation of a solid structure known as a firmament. Some cosmologies depict the world plain as being surrounded by a circular ocean-river, such as Oceanus in Greek cosmology or Raŋhā in Zoroastrian cosmology.^[1]

The cosmic ocean is also present in the mythology of Ancient Egyptians, Ancient Greeks, Jews, Ancient Indians, Ancient Persians, Sumerians, and Zoroastrians. It plays a prominent role in ancient near eastern, biblical, and other cosmologies.