In Saturation Diving, the saturation divers live in a pressurized environment, which can be a saturation system on the surface, or an ambient pressure underwater habitat when not in the water.
Saturation diving allows professional divers to live and work at pressures greater than 50 msw up to 80 msw for days or weeks at a time, though lower pressures have been used for scientific work from underwater habitats.
This type of diving allows a greater economy of work and enhanced safety for the divers. After working in the water, saturation divers rest and live in a dry pressurized habitat on or connected to a Diving Support Vessel (DSV) or other floating workstation, at approximately the same pressure as the work depth.