Oceanus

In Greek mythology, one of the Titans, the god of a river believed to encircle the Earth. He was the ancestor of all other river gods and the nymphs of the seas and rivers.

In the Iliad, Homer calls him father of the gods, but most later texts refer to him as the son of Uranus, the primeval sky god, and Gaia, goddess of the Earth. His wife was the Titaness Tethys.

With the advance of geographical knowledge, the name Oceanus was given to the open sea, particularly the Atlantic, as distinct from the Mediterranean, Euxine, Caspian, and other enclosed seas.