The Delongo Sea is a large body of the Atlantic Ocean, that is located in North-West Delongo. It is bordered by the provinces of Quad-Blix, Claymore Tri, and Independance Toll. The water source is the Maple Strait. The Delongo Sea is a water source for the massive Tri Lake, via the New London River.

Cities located on the Delongo Sea include West New London, East New London, Princess Diana Kingdom, Coasttown (argued), New Vancouver, New Sienfield, Sasin City, Lexi, Orthoson, Socton, Laurien, New Dimin, Daisifox, and Lexing.