| alanformstone.com: Pictures and descriptions of cave diving trips in Mexico and Florida, including some of the more off the beaten track sites. |
| Blue Holes Foundation: Dedicated to exploration and scientific investigations of underwater caves in the Bahamas. Includes general information, photos and a list of publications. Located in Charleston, South Carolina, United States. |
| Cave Diver's Forum: Multiple discussion boards feature gear exchange, trip reports, incident reporting and analysis, buddies and resources. |
| Cave Divers Association of Australia: The national organisation for Australia. |
| Cave Diving Group: The official web site for the CDG of Great Britain. |
| Cave Diving in Greece: The exploration of Drakos and Polidrosso together with team, equipment and contact information. |
| Cave Diving Rocks: South Georgia enthusiast offers statistical summary of his dives, articles, photos, projects, tips, files. Includes contact form. |
| Caveboard: Discussion group covering all the various aspects of cavern & cave diving worldwide. Posts, calendar, members list, advice, locations, trip reports. |
| CDAA: Cave Divers Association of Australia. |
| European Karst Plain Project: The EKPP dives primarily in Frane using DIR diving techniques. Project information, training, history, images and videos. |
| Expedition Divers: Extreme underwater video production and services. DVDs for sale, technical diving instruction, expeditions and information on available services. |
| Florida Cave Diving: Information on cave diving in the North Central Florida springs area and Mexico. Pictures, descriptions and links. |
| German Cave Diving Mailing List: A mailing list established to promote an exchange of cave diving related issues via Internet. |
| Grupo de Exploracion Ox Bel Ha: Dedicated to the continued exploration of the world's largest underwater cave system and the largest cave system in the Mexican Republic, located in the Yucatan Peninsula. Includes members, history of the system, maps, FAQs, articles. |
| Hooked On Cave Diving: Underwater photographs of the cenotes in the Riviera Mayan region of Mexico. |
| Jacksonville Diving: Includes guides to area locations, marine forecasts and tides, essays, photos and links. |
| Loco Gringo Underground: A basic introduction to safe cave diving with some nice photographs. |
| Mexico Profundo: An organisation undertaking exploration, scientific study and mapping of water filled caves and related features in México and Central America. |
| NACD: National Association For Cave Diving based in Florida, USA. |
| NSS Cave Diving Section: The main organisation for cave divers in the USA. |
| Pluto Dive: Located in Playa del Carmen, Yucatan, Mexico and providing training for cenote and cavern diving. Training and dive site details, local history, pictures and accommodation options. |
| Quintana Roo Speleological Survey: The Survey and Cartography of The Underwater Caves of Quintana Roo Mexico. Includes exploration reports, surveys, descriptions, maps and contact info. |
| SMART Cave Diving Policy: Safety information from the San Marcos Area Recovery Team, National Speleological Society, USA. |
| The Cave Diving Website: Covers what is involved, who can be a diver, when, where and how. Includes safety rules for diving in Florida and Mexico. |
| Underwater Caves of Hungary: Information and pictures of a number of caves in Hungary. |
| Woodville Karst Plain Project: An organisations undertaking exploration of deep underwater caves in North Florida. |
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