Cave Diving
Coverage and research gaps
What this section covers, counted from the records actually published, and the documented cave-diving areas we have not covered yet.
Cave systems
71
Entrances & sites
119
Providers
48
Claims verified at source
1714 / 2708
| Country | Region | Systems | Sites | Providers | Claims verified | Coverage | Last checked |
|---|---|---|---|---|---|---|---|
| Mexico | North America | 10 | 26 | 9 | 63%295 claims | Well covered | 2026-10-14 |
| United States | North America | 10 | 21 | 6 | 79%325 claims | Well covered | 2026-10-14 |
| Belize | Central America & Caribbean | 1 | 1 | 1 | 50%20 claims | Thinly covered | 2026-10-14 |
| Cuba | Central America & Caribbean | 0 | 2 | 0 | 0%14 claims | Thinly covered | 2026-10-14 |
| Dominican Republic | Central America & Caribbean | 2 | 2 | 1 | 59%34 claims | Partly covered | 2026-10-14 |
| The Bahamas | Central America & Caribbean | 5 | 6 | 4 | 30%122 claims | Partly covered | 2026-10-14 |
| Brazil | South America | 5 | 5 | 3 | 47%139 claims | Partly covered | 2026-10-14 |
| Czechia | Europe | 1 | 1 | 1 | 95%19 claims | Thinly covered | 2026-10-14 |
| Finland | Europe | 1 | 1 | 0 | 0%14 claims | Thinly covered | 2026-10-14 |
| France | Europe | 6 | 11 | 2 | 68%159 claims | Well covered | 2026-10-14 |
| Germany | Europe | 1 | 1 | 1 | 85%20 claims | Thinly covered | 2026-10-14 |
| Greece | Europe | 1 | 0 | 0 | 78%9 claims | Thinly covered | 2026-10-14 |
| Hungary | Europe | 2 | 2 | 1 | 32%31 claims | Partly covered | 2026-10-14 |
| Italy | Europe | 2 | 4 | 2 | 40%60 claims | Partly covered | 2026-10-14 |
| Norway | Europe | 1 | 3 | 2 | 34%35 claims | Partly covered | 2026-10-14 |
| Portugal | Europe | 1 | 0 | 0 | 71%7 claims | Thinly covered | 2026-10-14 |
| Slovenia | Europe | 1 | 1 | 0 | 45%11 claims | Thinly covered | 2026-10-14 |
| Spain | Europe | 2 | 3 | 3 | 43%54 claims | Partly covered | 2026-10-14 |
| Sweden | Europe | 2 | 3 | 2 | 0%39 claims | Partly covered | 2026-10-14 |
| United Kingdom | Europe | 2 | 2 | 1 | 96%28 claims | Partly covered | 2026-10-14 |
| Egypt | Africa | 1 | 1 | 1 | 0%17 claims | Thinly covered | 2026-10-14 |
| Namibia | Africa | 4 | 4 | 0 | 0%72 claims | Partly covered | 2026-10-14 |
| South Africa | Africa | 2 | 3 | 1 | 2%63 claims | Partly covered | 2026-10-14 |
| Zimbabwe | Africa | 1 | 1 | 1 | 29%24 claims | Thinly covered | 2026-10-14 |
| Malaysia | Asia | 0 | 1 | 1 | 50%10 claims | Thinly covered | 2026-10-14 |
| Philippines | Asia | 2 | 2 | 1 | 13%30 claims | Partly covered | 2026-10-14 |
| Australia | Oceania | 4 | 11 | 4 | 85%150 claims | Well covered | 2026-10-14 |
| New Zealand | Oceania | 1 | 1 | 0 | 31%13 claims | Thinly covered | 2026-10-14 |
Well covered: at least 3 systems, 5 sites and 2 providers, with 60% or more of claims verified at a primary source. Partly covered: at least 3 systems or sites. Otherwise thinly covered.
Known gaps
| Area | Region | Why it is a gap |
|---|---|---|
| Botswana, Mozambique, Madagascar and Morocco | Africa | Not researched yet. Southern Africa coverage is limited to South Africa, Namibia and Zimbabwe. |
| Philippines beyond Hinatuan and Pawod (for example Casili and Bababu) | Asia | Not yet researched. |
| Thailand, Japan, Indonesia, China and Papua New Guinea | Asia | Not covered. Indonesian (West Timor) cave diving is documented mainly in printed CDAA newsletters. |
| Bahamas: Andros Blue Holes National Park and Grand Bahama caves (Owl's Hole, Mermaid's Lair) | Central America & Caribbean | Named by the Grand Bahama Museum and operators only; no official diving rules found. |
| Belize inland caves, Guatemala and Honduras | Central America & Caribbean | Belize coverage is the Great Blue Hole only. |
| Cuba beyond Cueva de los Peces and Saturno | Central America & Caribbean | Current Cuban records rest on low-confidence sources and are marked unverified. |
| Dominican Republic: Cueva Taína, Los Haitises and ministry rules | Central America & Caribbean | Coverage is the Padre Nuestro area only; no environment-ministry diving rules were found. |
| Jamaica, Puerto Rico and Turks and Caicos | Central America & Caribbean | No documented cave diving was found before the search budget ran out. |
| Yucatán state and Campeche (Mexico) | Central America & Caribbean | Mexico coverage is the Quintana Roo coast only. Popular cenotes such as Gran Cenote, Jailhouse and Pandora are also missing because no official page was found. |
| Croatia (Vrelo Une, Cetina springs) | Europe | Known deep resurgences, but no primary source could be opened; only encyclopaedia figures were found. |
| French Jura and Doubs resurgences | Europe | Only Source Bleue de Cusance is covered; the region has many more documented resurgences. |
| German and Central European flooded mines | Europe | Mine dives such as Miltitz were not researched. |
| Ireland, Austria, Switzerland, Belgium and the Netherlands | Europe | Not covered. The Irish speleological union site refused connections; the others were not reached. |
| Italy: Timavo, Su Gologone and other Sardinian and Apulian caves | Europe | Coverage is limited to Pozzo del Merro and the Cala Gonone area. |
| Mallorca beyond Sa Gleda (Vallgornera, Cala Varques, Cova des Coloms) | Europe | Not yet researched; permit rules for Balearic caves were not found published. |
| Middle East (Oman, Israel, Jordan, Lebanon, Turkey) | Middle East | Not researched in the first pass: the shared search budget ran out before these countries were reached. |
| Florida: Telford, Royal Spring, Weeki Wachee and Tallahassee-area operators | North America | Only provider or county pages were found; no managing-authority rules. |
| Missouri (Bonne Terre Mine, reported closed) and Tennessee | North America | Not researched beyond a closure notice on the mine operator's own site. |
| Australia: Tasmania, New South Wales (Wellington) and other Nullarbor caves | Oceania | Listed in the CDAA directory but not yet researched. |
| New Zealand: Riwaka (Riuwaka) Resurgence | Oceania | Only a snorkelling page and an encyclopaedia entry were found; the conservation department page could not be read. |
| Argentina, Chile, Colombia, Peru, Venezuela and Ecuador | South America | Not researched; South American coverage is Brazil only. |
| Photographs | — | Only a handful of records have a checked Wikimedia Commons photograph; the rest show a plain labelled tile until a photo of the actual place is found. |
| Provider affiliations | — | Almost every provider affiliation is the provider's own statement; checking them in each agency's instructor locator is the next step. |
Know a source we should use, or a place we have wrong? Tell the editors.