Setting
Global
Diving
Standards
IDU is a premier international diving agency dedicated to developing diving standards, educational materials, instructor training, and diver certification — from recreational scuba diving to advanced technical diving, CCR, cave and wreck diving.
One Union.
One Standard.
International Divers Union unites thousands of divers worldwide, developing and promoting professional diving training programs aligned with international ISO standards. Our mission is to train self-sufficient, safety-conscious divers and protect the world's ocean ecosystems.
- Unite divers committed to safety and quality diving education
- Develop diving standards compliant with international ISO norms
- Train self-sufficient divers with advanced safety and self-rescue skills
- Maintain high standards for diver and instructor certification
- Protect and conserve ocean ecosystems worldwide
- Explore and document underwater historical objects and wrecks
What We Do
Goals & Standards
IDU develops rigorous diving standards and training programs that meet and exceed international ISO requirements, ensuring every certified diver achieves genuine competence.
Training & Education
From beginner scuba diving courses to elite technical diving, CCR, cave diving, and wreck diving specialties — IDU provides structured, comprehensive diver education at all levels.
Evolution & Innovation
The diving world evolves constantly. IDU continuously updates its educational materials, instructor programs, and diving standards to reflect modern techniques and safety research.
Every Depth.
Every Discipline.
IDU certifies divers across the full spectrum of diving disciplines — from open-water recreational scuba diving to the most demanding technical and exploration diving environments.
Recreational Diving & Scuba Diving Courses
Learn to dive with IDU-certified instructors. Our recreational scuba diving courses follow international standards, giving you the skills and confidence to explore the underwater world safely.
View Courses ›Sidemount Diving
Master the sidemount configuration for overhead environments, wreck diving, and cave diving penetration.
Learn More ›Technical Diving
Push beyond recreational limits with IDU technical diving courses — decompression diving, mixed gas, and deep diving.
Explore Tech Diving ›CCR Diving — Closed Circuit Rebreather
Closed circuit diving represents the pinnacle of underwater exploration. IDU CCR diving courses prepare you to operate rebreather systems safely and efficiently for extended, silent dives.
CCR Certification ›Certification You
Can Trust
ISO-Compliant Diving Standards
All IDU training programs are developed in accordance with ISO 24801 and related international standards for recreational and professional diving.
Instructor Training & Authorization
IDU maintains strict requirements for instructor qualification. Only authorized IDU instructors may teach and certify divers under the IDU diving agency umbrella.
Diver & Course Registration
Every IDU certification is recorded in our global registry. Diver credentials can be verified instantly online — protecting divers, instructors, and dive centers worldwide.
Training Materials & Manuals
IDU publishes comprehensive diving manuals and educational resources covering all disciplines — from beginner scuba diving to technical and CCR diving.
International Standard Compliance
IDU training programs aligned with ISO international diving standards for safety and quality of diving education.
Verify Your IDU Certification
Instantly check the validity of any IDU diver certification card. Our global database registers every completed diving course and issued certificate.
Check Certification ›The IDU Difference
Safety First Philosophy
Every IDU diving standard, course, and certification is built on the principle that diver safety is non-negotiable. We train divers who can protect themselves and their buddies.
Global Diving Community
As an international diving association, IDU connects thousands of certified divers and instructors worldwide under a shared commitment to quality and safety.
Professional Manuals
IDU educational materials and diving manuals are continuously updated, covering every discipline from recreational scuba diving to advanced cave and wreck diving.
Environmental Responsibility
IDU is committed to ocean conservation — educating every diver to respect, protect, and preserve underwater ecosystems for future generations.
Ready To
Learn Diving?
Start your journey with IDU — from your first scuba diving course to professional instructor certification. Find an IDU diving school near you.