Example image of eyePlorer eyePlorer map for 'Technical diving': Recreational diving Scuba diving Breathing gas Earth's atmosphere Nitrox Open-water diving Penetration diving Professional Association of Diving Instructors National Oceanic and Atmospheric Administration Nitrogen narcosis Partial pressure Decompression stop Decompression sickness Helium Nitrogen Tissue (biology) Oxygen Trimix (breathing gas) Cave diving Deep diving Ice diving Wreck diving Silt out Heliair Heliox Hypoxia Oxygen toxicity Divers Alert Network Diving equipment Diving cylinder Rebreather Sidemount List of diver training organizations Diving Science and Technology Global Underwater Explorers International Association of Nitrox and Technical Divers National Association of Underwater Instructors Technical Diving International Unified Team Diving Scuba Schools International British Sub-Aqua Club Diving hazards and precautions Billy Deans (diver) Claudia Serpieri David Apperley David Shaw (diver) Decompression trapeze Equivalent narcotic depth Gary Gentile Jim Bowden (diver)