Note: This ocean (and its marginal seas) should only be credited when a story takes place beneath the ocean's surface or outside the (specified) territorial waters of a particular nation. Characters visiting a coastal beach is not a creditable ocean appearance.

The second largest ocean in the world, the Atlantic Ocean separates the continents of North and South America from Europe and Africa.

The Atlantic Ocean is often depicted as the location of the lost city of Atlantis due to its proximity to Europe (from where they myth originated.) It is also the setting of the Sargasso Sea (which featured heavily in golden age stories) and the Bermuda Triangle. The ocean also appeared often in the silver age in the stories of Adam Strange, as he would wait over top of the ocean for the Zeta Beam to strike him.