
Professional Freediving Training
Experience the art of freediving - the most natural form of underwater exploration. Using specialized techniques to extend your breath-hold, you'll discover a profound connection with the ocean.
What is Freediving?
Freediving is the practice of diving underwater on a single breath without the use of breathing apparatus. It combines mental focus, specialized breathing techniques, and efficient movement to create a meditative underwater experience unlike any other.
Unlike scuba diving, freediving offers complete silence, freedom of movement, and a more intimate connection with the marine environment. It's been practiced for thousands of years for both subsistence and sport.
With proper training, freediving is safe and accessible to most people, offering a unique way to explore both your inner capacity and the underwater world.

International Certification
Earn an internationally recognized freediving certification, opening doors to freediving experiences worldwide.
Extended Breath-Hold
Develop techniques to safely increase your breath-hold duration, allowing for longer and more relaxed underwater exploration.
Mental Mastery
Learn deep relaxation and mental focus techniques that have benefits extending far beyond freediving into daily life.
Why Learn Freediving With Us
Vietnam Underneath offers the highest standards in freediving education, with expert instructors and a focus on safety and personalized attention
Safety First Approach
Safety is our absolute priority. Our courses emphasize proper techniques, buddy procedures, and recognition of potential issues. All our instructors are trained in rescue procedures and first aid.
We maintain small class sizes with a maximum 4:1 student-to-instructor ratio to ensure personalized attention and supervision throughout your training.
Expert Instruction
Learn from Huy Nguyễn, a Master Freediving Instructor with over 10 years of experience teaching freediving in Vietnam's waters. His patient, methodical approach ensures students develop strong fundamentals and confidence.
Our teaching methodology combines the latest scientific understanding of freediving physiology with time-tested traditional techniques for optimal results.
Quality Equipment
Train with high-quality freediving-specific equipment. We provide specially designed long fins, low-volume masks, proper weight systems, and training lanyards for your course.
All our equipment is meticulously maintained and regularly replaced to ensure optimal performance and safety during your training.
Internationally Recognized
Earn your International Freediver certification - a globally recognized credential that validates your skills and knowledge in freediving practices and safety procedures.
This certification allows you to participate in guided freediving activities worldwide and serves as a foundation for advanced freediving training.


What You Will Master
Our comprehensive curriculum provides you with all the essential freediving skills, from breath control to safety protocols
Advanced Breathwork
Master specialized breathing techniques including:
- •Full breathing cycle optimization
- •Diaphragmatic breathing
- •Pre-dive preparation sequences
- •Recovery breathing protocols
Deep Relaxation Techniques
Develop the mental skills essential for prolonged breath holds:
- •Mental focus and concentration
- •Progressive body scanning
- •Conscious relaxation methods
- •Stress and anxiety management
Effective Equalization
Learn techniques to equalize pressure in your ears and sinuses:
- •Mastering the Frenzel maneuver
- •Hands-free equalization methods
- •Equalization troubleshooting
- •Depth-specific equalization strategies
Efficient Underwater Technique
Perfect your movement for maximum efficiency:
- •Streamlined finning techniques
- •Optimal body positioning
- •Energy-efficient duck dives
- •Advanced entry and exit techniques
Freediving Safety & Rescue
Comprehensive safety protocols and rescue procedures:
- •Effective buddy procedures
- •Recognizing signs of hypoxia
- •Surface rescue techniques
- •Emergency response protocols
Freediving Theory
Fundamental knowledge of freediving principles:
- •Breath-hold physiology
- •Pressure physics and adaptations
- •Equipment selection and maintenance
- •Environmental considerations
Course Structure & Locations
Our 2.5-day course is designed to maximize your learning through a combination of classroom theory, controlled pool sessions, and open water dives
Theory Session
Foundation of Knowledge
Begin your journey with a comprehensive evening session covering all the theoretical aspects of freediving:
- Freediving physiology and physics
- Safety protocols and buddy procedures
- Equipment overview and selection guidance
- Introduction to breathing techniques and relaxation
Materials: Digital course materials provided before the session for pre-reading
Assessment: Brief knowledge review to ensure understanding of critical concepts
Pool Session
Skill Development
Practice essential skills in the controlled environment of a swimming pool:
- Breathwork and relaxation techniques
- Static apnea (stationary breath-hold)
- Dynamic apnea (swimming underwater)
- Finning techniques and body positioning
- Recovery breathing and safety protocols
Equipment: Basic freediving gear provided (mask, snorkel, fins, weight belt)
Requirements: Bring swimwear, towel, and water/snacks
Open Water
Real-World Application
Apply your skills in the natural ocean environment at beautiful dive sites in Nha Trang:
- Vertical descents using a dive line
- Equalization techniques at depth
- Buddy procedures and safety protocols
- Marine environment observation skills
Equipment: All freediving gear provided
Note: Transportation to Nha Trang and accommodation are not included in the course fee
Travel: We can assist with travel arrangements at an additional cost
Important Location Note
This course requires travel from Ho Chi Minh City to Nha Trang for the open water component. Transportation and accommodation in Nha Trang are not included in the course fee. Our team can help arrange these at an additional cost if needed.
Course Investment
Invest in your skills, safety, and underwater exploration capabilities
Professional Freediver Course
Complete certification package
What's Included
- Digital course materials and resources
- International certification fees
- Pool session entry fees
- Freediving equipment rental during course
- Mask, snorkel, fins, weight belt
- Open water boat fees in Nha Trang
- Professional instruction throughout
- Logbook for recording dives
Not Included
- ×Travel to/from Nha Trang
- ×Accommodation in Nha Trang
- ×Meals and personal expenses
- ×Personal wetsuit (recommended 3mm)
- ×Travel insurance (required)
Travel Package Option
We can arrange transportation and accommodation in Nha Trang at an additional cost. Please inquire during booking for current rates and options.
Payment Terms
- • 50% deposit required to secure your spot
- • Remaining balance due 7 days before course start
- • Accepted payment methods: Credit/Debit Card, Bank Transfer, Cash (VND/USD)
Upcoming Course Dates
Select the date that works best for your schedule
Course #1
Course #2
Course #3
Custom Dates Available
Don't see a date that works for you? We can arrange custom course dates for groups of 2 or more. Contact us for availability and pricing for private or group sessions.
Meet Our Lead Instructor
Learn from an experienced, PADI-certified Master Scuba Diver Trainer

HuyNguyễn
Master Scuba Divers Trainer“Safety is a habit you practice on every dive—never a checkbox.”
Huy Nguyen teaches scenario-based training with an emphasis on risk assessment, human factors, and deliberate practice. His courses follow a university-style structure: clear outcomes, coached repetitions, and objective assessment so divers build durable competence.
Before focusing on instruction he guided extensively around Nha Trang and the South Central Coast, logging varied conditions from gentle reefs to surge and current. This breadth informs realistic briefings and safety planning for new and advanced divers alike.
Huy mentors small cohorts and integrates local reef-care habits—buoyancy discipline, finning that protects coral, and respectful wildlife interactions—so every dive contributes to an ocean-positive culture.
Elite Instructor
PADI's recognition for its top-performing instructors — 4 years earned.
13 Certifications
Every credential below is independently checkable on PADI's official Pro Chek directory. Tap a certification to read what it covers — and tap Verify to confirm it directly with PADI.
What Our Students Say
Frequently Asked Questions
Find answers to common questions about freediving and our course
Have more questions? We're happy to help!
Contact us directly →Book Your Freediving Course
Start your freediving journey today by completing the booking form below
What Happens Next?
- 1
We'll review your booking request and contact you within 24 hours to confirm availability.
- 2
Once confirmed, we'll provide payment instructions for the 50% deposit to secure your spot.
- 3
We'll send you the medical questionnaire, course materials, and detailed information about what to bring and where to meet.
- 4
If you need assistance with travel to Nha Trang, we're happy to help with arrangements.