A cosmic ocean is a mythological motif found in the Creation myth of many cultures and civilizations. The cosmic ocean is often seen as the entire universe in a dim and nonspecific past, and the first source of gods or the world. The cosmic ocean is also often seen as still surrounding the present world.
Christianity and Judaism
In the first creation myth in the Bible, there is only earth and water in a disorganized state: "Now the earth was unformed and void, and darkness was upon the face of the deep; and the spirit of God hovered over the face of the waters." (...). (Genesis 1:2.) The world is also created as a space inside of the water, and is hence surrounded of it, "And God saith, `Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.' " (Genesis 1:6).