The Korvale Ocean is one of the main oceans of Bajor. The Perikian Peninsula jutted into the Korvale Ocean.
In ancient times, Natlar Port was established on the Perikian Peninsula as a gateway between the land and the ocean. Fort Tendro was also close to the ocean. The ocean water is green. (DS9 short story: "Horn and Ivory")
The Yolja River flows into the Korvale Ocean. (ST - Typhon Pact novel: Plagues of Night)