TDI Cavern Diver


TDI Cavern Diver Course

This course is designed to develop the minimum skills and knowledge for cavern and overhead environment diving within the limits of light penetration as well as learning about the specific hazards associated with cave diving. The cavern diver course in not intended to provide instruction for cave diving environments. The objective of this course is to train divers in the proper planning, procedures, techniques and hazards of cavern diving.



What is the TDI Cavern Diver course?

The TDI Cavern Diver course offers a glance into the amazing world of underwater caverns. This course, as the overhead environment diver course, is designed to provide you with the training and knowledge necessary to allow you to dive safely within your limits of training and experience.

Why is Divers UnderGround the best Dive Center to take your TDI Cavern Diver course in Mexico?

Caverns and their mysteries exist all over, but here in the Riviera Maya, we are at the heart of the world’s longest and most beautiful underwater cave systems and hence, home to Divers UnderGround©. Cenote Jardin del Eden, also known as Cenote Ponderosa is our in-house Cenote, it is one of the most popular training Cenotes in the area!  These magical and intriguing overhead environments are beyond beautiful.

Course Structure:

Water Execution:

Two Confined Open Water training dives.

Four cavern dives conducted at 2 different sites and 4 different caverns.



Course must be conducted over a minimum of 3 days (2 days when combined with Intro to Cave)

What are the advantages of becoming a Cavern Diver?

Although as a certified Open Water diver you can sign up for a cavern dive tour in the Cenotes, guided by a professional Cave Diver guide it is always best to know what you are getting into.

This course is the first of three steps towards becoming a TDI Full Cave Diver and your ticket into the mythical underworld.  The TDI Cavern Diver course allows you to learn and practice the proper planning, procedures, techniques and hazards of cavern diving so you can safely explore the part of a cavern that is within the limits of the natural light zone and within 60 metres /200 ft linear from the surface. It gives you the opportunity to get experience in the overhead environment in a fun, controlled and progressive manner to determine whether cave diving is for you.

The TDI Cavern Diver course is performance based and requires that you complete and can perform all land drills and cavern diving skills requirements efficiently; demonstrate mature, sound judgment concerning dive planning and execution as well as maintain an appropriate level of awareness and respect for the environment.  Safety and standards are always the priority and your training is taken very seriously.


Course prerequisites:

• Minimum age 18, 15 with parental consent

• Provide proof of a PADI or SDI Open Water Scuba Diver or equivalent

• Proof of 25 logged dives

Qualifications of Graduates:

1. Daylight zone, i.e. within natural light of the cavern entrance

2. The maximum penetration is limited to 1/6 of the gas volume

3. 61 linear metres / 200 linear feet from the surface

4. 40 metres / 130 feet maximum depth

5. No decompression diving

6. No restrictions; no areas too small for 2 divers to pass side-by-side

7. Safety stops as appropriate or necessary

8. Maintain a continuous guideline

9. Use proper cavern diving equipment

10. No removal of life support equipment within the overhead environment

Upon successful completion of this course, graduates are qualified to start with the TDI Intro to Cave course

Some of the skills you will learn and master thru practice during the TDI Cavern Diver Course include:

• First you will learn how to properly deploy a guideline

• Also you will learn how to follow a guideline with eyes open and closed (while simulating loss of visibility)

• Air share with a buddy with eyes open, following a guideline

• Air share with a buddy with lights off and eyes closed, using touch contact while following the guideline

• Remove and replace mask while in contact with the guideline

• Demonstrate conservation, awareness, as well as back referencing techniques

• Besides proper light and hand signals you will also be proficient with touch contact communication

• Demonstrate anti-silting techniques

• Simulate a primary light failure and use back up light to exit

• Demonstrate buoyancy control, proper trim, and propulsion techniques

• Equipment check and matching

• Demonstrate adequate pre dive planning

TDI Cavern Diver minimum certification requirements:

• Perform all land drills and cavern dive requirements efficiently

• Demonstrate mature, sound judgment concerning dive planning and execution

• Maintain an appropriate level of awareness and respect for the environment

TDI Instructor
PADI Tec Deep Course
PADI course
SDI Divemaster Course
shearwater perdix
Razor Sidemount
Light & Motion Torch
Bigblue Dive Lights

Get in touch with us!

Your Name (required)

Your Email (required)

Confirm Your Email (required)


How can we help you?

© Copyright 2019 by Divers Underground

Email: [email protected]