TDI Cavern Diving Instructor Development & Evaluation
The cavern is the classroom
Your judgment is the standard.
Pre-Evaluation Preparation Available
Not yet ready for the evaluation? We can help qualified candidates complete the required path toward eligibility, including:
- Assisting with 1 complete TDI Cavern Diver course with an active TDI Cavern Instructor
- Professional mentoring and performance review
- A recommendation for evaluation readiness, when standards are met
Prerequisites:
Required Certification
- Minimum age 21
- Active-status Open Water Instructor with a recognized agency for at least 1 year
- TDI Nitrox Instructor or equivalent
- TDI Full Cave Diver certification or equivalent
Plus
- Proof of at least 100 full cave dives
- Proof of teaching at least 4 SDI/TDI/ERDI courses
- Proof of assisting with at least 1 complete TDI Cavern Diver course with an active TDI Cavern Instructor
- Recommendation from a TDI Cavern Instructor confirming readiness for evaluation
Why do I need to take the TDI Cavern Diving Instructor Evaluation?
What to Expect
on the program
This evaluation is demanding by design. The goal is to leave you ready to represent TDI with confidence, clarity, and sound judgment.
WHERE OTHERS SEE WATER, WE SEE A PORTAL
What TDI Instructors develop during this course & evaluation
- Learn to structure and present a complete TDI Cavern Diver course
- Refine demonstration quality in real overhead-environment conditions
- Strengthen risk management, team control, and exit-focused emergency handling
- Improve communication with light, hand, and touch signals
- Build stronger judgment, professionalism, and environmental awareness
- Develop the confidence to teach cavern diving to a high standard
Why Train with Divers UnderGround
- Training with a TDI/SDI 5-Star Professional Development Facility
- Located in the Riviera Maya, Mexico, one of the world’s best-known cave diving regions
- Led by instructors specialized in cavern, cave, and technical diving
- Camilo García is the TDI Cavern Instructor Evaluator
- Since 2008, Divers UnderGround has guided certified divers and trained divers pursuing the next professional level
Details
Includes
- Transportation from Playa del Carmen, Puerto Aventuras, or Tulum
- Nitrox 32% or air
- Cenote entrance fees
- Water, lunch, and snacks
- Instructor evaluation and supervision
- Academic and standards review
- In-water assessment dives
- Performance feedback and debrief
Not Included
- TDI registration fees
- Personal dive equipment
- Travel and accommodation

Evaluation Duration:
Two days

Instructor Development and TDI Cavern Diver course assist
Three days and five dives prior to the evaluation course
Instructor Evaluation PricE
Development & Cavern Course Assist
If you have a dive center and want us as your allies to run your operation in the Riviera Maya, contact us. We have special rates for you.
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