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Cavern Diver Instructors Worldwide
Cavern Diver in worldwide: 73 instructors on TecDiveTools, with the agencies and courses each teaches, and a summary of what students say.
73 instructors
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Cavern Diver in worldwide: 73 instructors on TecDiveTools, with the agencies and courses each teaches, and a summary of what students say.
TecDiveTools lists 73 instructors teaching Cavern Diver worldwide.
Listings are ordered by how much evidence exists about their technical diving, not by a star rating, with any paid Featured listing shown first and marked as such (how rankings work). 26 of these 73 carry reviews we have read and classified as being about technical or overhead training. The count excludes recreational certifications by name, so a busy resort does not outrank a one-instructor cave operation on the volume of its reef trips. Separately, 26 have a written synthesis of what reviewers say about them. How we read and count reviews.
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About the course
This introductory overhead environment course qualifies Advanced Open Water Divers to explore the light zone of caves—passages within sight of an exit—using guideline protocols and basic overhead techniques in a controlled, entry-level setting. You'll learn fundamental line-laying procedures, silt management, emergency protocols specific to shallow cavern environments, and self-rescue techniques. Cavern Diver is the essential entry point to overhead diving and is required before progressing to Introductory Cave or other technical specializations.
73 instructors on TecDiveTools teach IANTD Cavern Diver worldwide: Mexico (49), United States (14), Thailand (7) and Indonesia (3). Each is listed above.
Published prices for IANTD Cavern Diver worldwide range across 8 centres in the TecDiveTools directory — roughly US$600 to US$1,150 at current exchange rates. In each centre's own currency: THB 29,000–30,000 (4 centres), €800–€1,000 (2 centres) and $600–$750 (2 centres). 5 centres charge by the day instead, which is not comparable with a course total. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
Between 2 and 4 days, based on the durations 10 centres publish for it worldwide. The time depends on the centre's schedule, weather, and how quickly the required skills are demonstrated — agencies set a minimum number of dives, not a fixed number of days.
At the same tier in TecDiveTools' cross-agency comparison, instructors worldwide also teach TDI Cavern (193), RAID Cavern (5), NSS-CDS Cavern Tech Diver (4), NSS-CDS Single Tank Cavern Diver (4) and ANDI Cavern (2). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.
