Each ~30 feet or 10 meters adds an extra atmosphere of pressure. Recreation divers go to 120-130 feet (~4 extra atmospheres). Commercial divers go to ~1000 feet

Each ~30 feet or 10 meters adds an extra atmosphere of pressure. Recreation divers go to 120-130 feet (~4 extra atmospheres). Commercial divers go to ~1000 feet (~30 extra atmospheres). There are rumors that Navi divers can go to ~2000 feet (~60 extra atmospheres).