Training
Underworld offers top-notch recreational, technical, and cave diving training โ from Try Dives to advanced cave, trimix, and closed circuit rebreather courses. Here’s what makes our training world-class:
- Human Factors Integration: Our training incorporates principles from The Human Diver, focusing on psychological safety, open communication, and effective teamwork. Divers learn technical skills and how to make better decisions, manage risks, and support each other underwater, creating a safer and more engaging learning environment.
- Training at Your Pace: We don’t rush. Our courses exceed agency minimum standards, ensuring divers are confident, competent, and enjoy the experience.
- Scenario-Based Training: Our technical and cave classes use realistic scenarios instead of a “box-ticking” approach, preparing divers for real-world situations. This involves giving students dynamic unannounced problems and failures to deal with as a team, building capacity to solve problems underwater.
- All-Inclusive Courses: No hidden fees. The daily rate for our courses covers entrance fees, materials, certification costs, cenote entrance fees, transport, equipment rental, and lunch.
- Top-Quality Equipment: We provide only the best gear, including Shearwater Computers, Apeks regulators, X-Deep Sidemount Gear, and Halcyon lights and wing systems.
- Nitrox as Standard: All courses use Nitrox at no extra cost, except where agency standards forbid it. Not Nitrox trained? We offer discounted Nitrox training as part of any course.


Instructor Training
Underworld is an SSI Instructor Training Centre and we can offer mentorship programmes to help with your journey to be a cave, technical or rebreather instructor. Taking divers into an overhead environment or on a deco dive for the first time is a huge responsibility. We are committed to giving instructors the technical and non-technical skills needed to create thinking divers.
Our lead instructor Lanny is also an Instructor trainer with NSS-CDS, and we can host and provide logistics for an NSS-CDS “Institute” to become an instructor with one of the original cave training organisations.


















