| CPBDS | Federal orgaization for fishing and diving in Brazil |
| Cave Diving Section of the National Speleological Society | National Speleological Society: Cave Diving Section |
| DIF | Dannish dive association |
| Divers Alert Network (DAN) | Non-profit organization for diver saftey |
| Global Underwater Explorers | |
| NAUI | National Association of Underwater Instructors. Dive certification agency |
| NDF | Norwegen dive association |
| National Association for Cave Diving | |
| National Parks Service - SCRU | U.S. National Parks Service's Submerged Cultural Resources Unit |
| PADI | Professional Association of Dive Instructors. Dive certification agency |
| SSDF | Swedish dive association |
| SUSL | Finnish dive association |
| Undersea & Hyperbaric Medical Society | Scientists focusing on undersea issues |