Deep Blue

Amidst the One Piece world exists a location locked by the high walls surrounding the red line. This “Sea” is known as the Deep Blue. It is cut off from a majority of the world. Originally, this meant the world was ravaged by pirate kingpins, and the peasants had no one to help. Fortunately, after an explorer managed to connect a Den Den Mushi to a Marine Base in the North Blue, the Admirals sent in forces to balance the Deep Blue, instilling a large Marine Base (D-1 Marine Base) to retain the authority. Seeing promise in this area, the World Government added an office into the Marine Base, stationing CP-7 at the location. Economically, the Deep Blue is comprised of fishing villages, and some agriculture. Because it is so isolated, there isn’t major global trade, however the invasion of the Marines allowed this to change, and now exports and imports arrive from the rest of the world. Slowly, the Deep Blue has changed from a traditional fishing and agriculture society to a mixture of various cultures, welcoming species such as Fishmen, and even Giants, who never existed there prior.

The Deep Blue contains four islands. Greatfish Isle, Barton Island, Odo Island, and the D-1 Marine Base