Deepdown

The Deepdown is the name given to the shared community of various underwater facilities.

Overview
The Deepdown is a vast collection of different domes and facilities created by various corporations, which are mostly located on the continental shelves. The main economy of the Deepdown are "green farms" where krill and phytoplankton are harvested, as well as fishing and undersea mining.

Amidst the Fourth Corporate War, the underwater facilities that make up the Deepdown disavowed their corporate founders and cut of all contact with the surface. They then developed and outfitted the domes with powerful cloaking devices that prevent any radar systems from figuring out where they’re located. Drift Nations serve as the only trading points between the Deepdown and surface civilisation.