
Global Underwater Explorers (
GUE) is a non-profit organization formed by leading explorers, researchers, and educators; these individuals are dedicated to the training of divers as well as the study and protection of the aquatic realm. GUE and its associated projects are responsible for conducting some of the world’s most remarkable dives, setting numerous world records in the process. The success of this group encouraged great interest in their diving and procedures.
Of particular interest is the promotion of solid fundamental skills for all divers (recreational and technical) as well as their adherence to a common diving standard. This general standard requires the following:
- Divers use the same equipment configuration; this enhances safety and efficiency 
 
- Divers use the same well-defined set of breathing gases, including Nitrox, Helium and Oxygen; standard mixes eliminate complexity and greatly enhance safety
 
- Divers use a team approach during all dives, facilitating fun and safety
 
- Divers must have a solid grasp of fundamental diving skills, including refined buoyancy, trim and teamwork; these skills must be developed in concert with the type of dive pursued. Difficult dives require very high levels of skill development.
 
GUE Training
The structure of GUE training is as follows:
Recreational Diver Level 1 and 2 (beginner and advanced) 
- Training includes a heavy emphasis on fundamental skills 
 
- Level 1 training includes Nitrox; level 2 includes Helium 
 
GUE Fundamentals
The GUE Fundamentals course  gives students the skills and techniques to   be able to be in complete  control in the water and takes a  comprehensive  look at the diver as a  self-contained unit, exploring  every single  aspect of what affects the  diver in the water. From  pre-dive planning,  to critically looking at  equipment choice, to  propulsion and maneuvering  techniques, to team  communication and  emergency protocols, to even the  gas that the diver  breathes, every  single component is explored in  detail to understand  what their risks  and benefits are.
 
- Designed to shore up weakness in fundamental skills 
 
- Pre-requisite class for Cave and Tech classes 
 
Technical Diver Level 1, 2 and 3
The  GUE Technical Diver Level 1 and 2 courses take these skills and   further  refine them to bring the diver beyond recreational ranges.  These   courses introduce the equipment and gases necessary to do these  sorts   of dives and explores the risks and contingencies of  decompression   diving. 
- Level 1 forms the foundation of technical diving 
 
- Level 2 is experienced-based training for aggressive diving 
 
- Level 3 lays the foundation for exploration diving 
 
Cave Diver Level 1, 2 and 3
- Level 1 forms the foundation of cave diving 
 
- Level 2 is experienced-based training for aggressive diving 
 
- Level 3 lays the foundation for exploration diving 
 
Rebreather 
- Trains divers in the use of the Halcyon RB80 
 
- Requires Tech 2 training