Portal:Underwater diving/Topics

v t e Diving decompression
General	Decompression (diving) Decompression equipment Decompression practice Decompression theory Equivalent air depth Equivalent narcotic depth History of decompression research and development Maximum operating depth Physiology of decompression Uncontrolled decompression
Algorithms	Bühlmann decompression algorithm Haldane's decompression model Reduced gradient bubble model Thalmann algorithm Thermodynamic model of decompression Varying Permeability Model
Diving	Deep diving Professional diving Recreational diving Saturation diving Scuba diving Technical diving Underwater diving
Equipment	Decompression buoy Decompression tables Decompression trapeze Dive computer Diving chamber Diving shot Hyperbaric stretcher Jonline Recreational Dive Planner
Gases	Breathing air Breathing gas Gas blending for scuba diving Heliox Nitrox Oxygen Trimix
Injury and treatment	Decompression sickness Diving chamber Hyperbaric medicine Hyperbaric treatment schedules In-water recompression
Procedures	Pyle stop Ratio decompression
Categories: Underwater diving decompression Commons: Category:Decompression

Training and skills

Commercial
certification authorities

Commercial
diving schools

Free-diving
certification agencies

Recreational
certification agencies

Recreational
certification levels

Scientific diver
certification authorities

Technical
certification agencies

Cave diving	Cave Divers Association of Australia (CDAA) Cave Diving Group (CDG) Global Underwater Explorers (GUE) National Association of Underwater Instructors (NAUI) Technical Diving International (TDI)

v t e Diver organisations
Freediver Federations	AIDA International (AIDA) AIDA Hellas British Freediving Association (BFA) Confédération Mondiale des Activités Subaquatiques (CMAS)
Recreational and technical scuba	British Sub-Aqua Club (BSAC) Cave Divers Association of Australia (CDAA) Cave Diving Group (CDG) Comhairle Fo-Thuinn (CFT) Confédération Mondiale des Activités Subaquatiques (CMAS) Federación Española de Actividades Subacuáticas (FEDAS) Fédération Française d'Études et de Sports Sous-Marins (FFESSM) International Association for Handicapped Divers (IAHD) Woodville Karst Plain Project (WKPP)
Scientific, archaeological and historical	Nautical Archaeology Society (NAS) Save Ontario Shipwrecks (SOS) Sea Research Society
Sports federations	Australian Underwater Federation (AUF) British Octopush Association (BOA) British Underwater Sports Association (BUSA) Federación Española de Actividades Subacuáticas (FEDAS) Fédération Française d'Études et de Sports Sous-Marins (FFESSM) South African Underwater Sports Federation (SAUSF) Türkiye Sualtı Sporları Federasyonu (TSSF) Underwater Society of America (USOA)
Related and uncategorised	Artificial Reef Society of British Columbia (ARSBC) CMAS Europe Divers Alert Network (DAN) Green Fins Naval Air Command Sub Aqua Club