Aktun Dive Center
   Includes details of services, prices, booking and contact. Located in Tulum, Mexico. [German and English].
   http://cavern-diving.aktundive.com

Blue Holes Foundation
   Exploration and scientific investigations of underwater caves in the Bahamas.
   http://home.swipnet.se/blueholes/

CDAA
   Cave Divers Association of Australia.
   http://www.cavedivers.com.au/welcome.htm

Cave Diver's Forum
   Multiple discussion boards feature gear exchange, trip reports, incident reporting and analysis, buddies and resources.
   http://www.cavediver.net

Cave Divers Association of Australia
   The national organisation for Australia.
   http://www.cavedivers.com.au/

Cave Diving Group
   The official web site for the CDG of Great Britain.
   http://www.cavedivinggroup.org.uk

Cave Diving Rocks
   South Georgia enthusiast offers statistical summary of his dives, articles, photos, projects, tips, files. Includes contact form.
   http://awooten.1afm.com/mysite/index.html

Cave Diving Thailand
   News and information about Thailand's Cave Diving Project.
   http://www.fullcave.com

Cave Diving in Greece
   The exploration of Drakos and Polidrosso together with team, equipment and contact information.
   http://www.cavediving.gr

Cave Diving in the Yucatan
   Features diving in cenotes, caves and underground rivers in the Riviera Maya and the Yucatan Peninsula. Includes underwater photos and scuba videos.
   http://scubadive.tv/articles/yucaves.html

Cave Excursions
   Offers cave training, SCUBA equipment sales and services, air fills, accommodations and personalized trips. Includes photo gallery and contact information. Located in Live Oak, Florida.
   http://www.sidemount.com

Caveboard
   Discussion group covering all the various aspects of cavern & cave diving worldwide. Posts, calendar, members list, advice, locations, trip reports.
   http://www.caveboard.com

DIR-Mexico - Cave Diving Training and Guiding in Mexico
   DIR Mexico provides quality cave diving instruction, training and guiding in Mexico's Yucatan Peninsula. GUE and NACD cave courses and instruction.
   http://www.dir-mexico.com

Dive Aventuras
   PADI 5 Star IDC Center specializing in ocean, cavern and cave diving. Technical supplies and instruction available to cave divers and novices alike. NACD Introduction to Cave, Full Cave, Nitrox and Advanced Nitrox courses are available upon request.
   http://www.diveaventuras.com/

Dive Outpost
   Offering beginner to advanced instruction. Includes details of course requirements and limits, FAQs, photos and contact form. Located in Live Oak, Florida.
   http://www.diveoutpost.com/

Dive The New Frontier
   Cave/cavern diving at the Mexican resort hotel of Villa de Rosa.
   http://www.cenotes.com/history.html

Doux de Coly
   European Cave Diving Project 2001. Details of the European cave penetration record achieved in August 2001 by a pan-European team of divers.
   http://www.tekdyk.dk/doux/UK/welcome.htm

European Karst Plain Project
   Includes history, members and sponsors, projects and photos.. Exploration primarily takes place in France.
   http://www.ekpp.org

Florida Cave Diving
   Information on cave diving in the North Central Florida springs area and Mexico. Pictures, descriptions and links.
   http://www.geocities.com/cavedivingx2/index.html

German Cave Diving Mailing List
   A mailing list established to promote an exchange of cave diving related issues via Internet.
   http://cave.lawo.de/jbohnert/mailinglist.htm

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.
   http://www.mexicocavediving.com

Hooked On Cave Diving
   Underwater photographs of the cenotes in the Riviera Mayan region of Mexico.
   http://www.scubadr333.com

Jacksonville Diving
   Includes guides to area locations, rental and charter prices, marine forecasts and tides, essays, photos and links.
   http://jaxdiving.arojas.com

Loco Gringo Underground
   A basic introduction to safe cave diving with some nice photographs.
   http://locogringo.com/cavediving/

Mexico Profundo
   An organisation undertaking exploration, scientific study and mapping of water filled caves and related features in México and Central America.
   http://www.mexicoprofundo.org/

NACD
   National Association For Cave Diving based in Florida, USA.
   http://www.safecavediving.com

NSS Cave Diving Section
   The main organisation for cave divers in the USA.
   http://www.nsscds.com/

Quintana Roo Speleological Survey
   Exploration, survey and cartography of the underwater caves of Quintana Roo, Mexico.
   http://www.caves.org/project/qrss

SMART Cave Diving Policy
   Safety information from the San Marcos Area Recovery Team, National Speleological Society, USA.
   http://www.smartdivers.com

Steve Gerrard - Cave Diving Training
   Offers information on training, links, and contacts. Located in Quintana Roo, Mexico.
   http://www.steve-gerrard.com

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.
   http://www.cavediving.com/

Underwater Adventures
   Offering courses for technical diving, including but not limited to, cavern, full cave, a decompression course extended range, advance nitrox as well as trimix. Includes details and location.
   http://bigwebpages.com/members/Underwateradventures/

Woodville Karst Plain Project
   An organisations undertaking exploration of deep underwater caves in North Florida.
   http://www.wkpp.org/

alanformstone.com
   Pictures and descriptions of cave diving trips in Mexico and Florida, including some of the more off the beaten track sites.
   http://alanformstone.com/