Underwater Cave Reports
Underwater cave reports

Underwater Cave Reports

Measurements, sources, and exploration updates for underwater cave systems.

Length reports

Underwater cave systems with reported length measurements.

#CaveLocationLengthSource
1Sistema Ox Bel HaTulum, Quintana Roo, Mexico541,791 mCINDAQ 2025 Annual Report
Primary source
2Sistema Sac ActunQuintana Roo, Mexico379,569 mQRSS Long Underwater Caves
Secondary source
Provided by: Alvarez/Nava/Reato/Picard
3Sistema K'oox BaalQuintana Roo, Mexico123,000 mFacebook Report
Primary source
Provided by: Robbie Schmittner
4Wakulla Cave SystemLeon/Wakulla, Florida, USA72,171 mCave-Exploring World Long Caves
Secondary source
Provided by: Casey McKinlay e-mail
5Arresteliako ziloa
Also: Souffleur de Larrandaburu
Pierre Saint Martin, Pyre. Atlantiques/Navarr, France60,943 mCave-Exploring World Long Caves
Tertiary / aggregate source
Provided by: Die langsten Unterwasserholensysteme der Welt
6Sistema Xunaan HaQuintana Roo, Mexico57,344 mQRSS Long Underwater Caves
Secondary source
Provided by: Quiet Diver Team
7Sistema Toh HaTulum, Quintana Roo, Mexico47,746 mQRSS Long Underwater Caves
Secondary source
Provided by: Berni/Sieff
8Sistema Zapote-Camilo
Also: Cenote Zapote, Sistema Camilo
Quintana Roo, Mexico40,169 mQRSS Long Underwater Caves
Secondary source
Provided by: Coffield-Feith/ Bulman
9Sistema Nohoch KaiTulum, Quintana Roo, Mexico33,505 mQRSS Long Underwater Caves
Secondary source
Provided by: Proyecto Nohoch Kai/ Schmittner/ Gugermeier
10Sistema CaterpillarQuintana Roo, Mexico28,253 mQRSS Long Underwater Caves
Secondary source
Provided by: DRSS/QDT

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