
EMPOWERING THE WORLD WITH APNEA EDUCATION
Explore the underwater world with confidence through AESI, the leading education system for freediving. Whether you’re just starting out or advancing your skills, our programs are designed for everyone.

Your Freediving Journey Starts Here
From your very first breath-hold to instructor-level mastery, AESI offers a complete, internationally recognized freediving education system. Whether you’re exploring the ocean for the first time or looking to refine your skills, our step-by-step curriculum is designed to guide, train, and inspire every diver at any level.
As seen in






A Structured Path for All Freedivers
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Little mermaids project
Learn moreCreated with the support of child psychologists and swimming instructors, this playful and educational program introduces children aged 6 to 10 to the world of freediving in a safe, fun, and engaging way. Through guided activities in a controlled pool environment, kids learn basic diving techniques, pressure equalization, and underwater movement—building water confidence while having fun.
➤ Duration: 2 Hours
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Breathold workshop for surfers
Learn moreA dynamic course combining theory and practical training, designed specifically for surfers. Developed with input from experienced surfers worldwide, this workshop explores the history of surfing, the science of breath-holding, and how to stay calm under pressure in big wave conditions. It’s a high-adrenaline, safety-focused program that builds confidence, awareness, and breathing control for peak performance in the water.
➤ Duration: 3 Days
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Swimming Instructor Course
Learn moreSwimming is one of the most popular and health-promoting sports worldwide. It offers cardiovascular benefits, low injury risk, and total body conditioning. This program teaches the core principles of swimming in both pool and open water settings, focusing on proper technique, safe instruction, and efficient breathing. Ideal for beginners or those looking to coach others with confidence and clarity.
➤ Duration: 6 Days
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Freediving for People with Special Needs
Learn moreThis inclusive program is specially designed to help individuals with physical, developmental, or cognitive challenges experience the freedom and comfort of the underwater world. Created with the guidance of psychologists, adaptive swimming instructors, and parents, it provides a supportive environment where participants can safely explore breath-holding and underwater movement at their own pace.
➤ Duration: Varies by group
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Breath & Exercise
Learn moreDesigned for athletes involved in high-intensity training, this program focuses on optimizing breath control to improve oxygen efficiency, endurance, and recovery. Ideal for runners, swimmers, cyclists, and contact sport athletes, it combines breathing science with practical application to enhance performance and reduce fatigue.
➤ Duration: 2 Hours
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Stress at Work & Breath
Learn moreThis workplace-focused seminar helps employees manage stress through conscious breathing techniques. By understanding the physiology of breath and its effect on the nervous system, participants gain practical tools to stay calm, focused, and productive under pressure. Without requiring major lifestyle changes, this 2-hour session boosts well-being, emotional regulation, and performance in professional environments.
➤ Duration: 2 Hours
Upcoming Courses
Got Questions? We’ve Got You Covered.
Frequently Asked Questions
Are the courses safe?
Yes! Apnea Education System International is built with safety as its foundation. All programs are taught by certified instructors, following proven freediving safety protocols. We teach risk management, equalization, and partner rescue from Day 1.
What gear do I need?
For most AESI courses, you’ll need basic freediving equipment including a mask, snorkel, and long-blade fins. A wetsuit appropriate for local water temperatures is highly recommended, along with a weight belt for buoyancy control during dives. While you are welcome to bring your own gear, most AESI training centers offer rental options or can help guide you on purchasing high-quality equipment suited to your level. If you’re unsure what to get, your instructor will advise you on the best choices for safety and comfort during training.
Is freediving suitable for kids?
Yes! Our “Little Mermaids Project” is a specialized pool-based freediving program for children aged 6–10 — created with the help of psychologists and swimming educators for safety and fun.
I have a disability — can I still freedive?
Absolutely. AESI offers adaptive freediving programs for individuals with physical or developmental challenges. Contact us to customize a plan that suits your needs.
Where can I take AESI courses?
AESI programs are available at certified training centers in Cyprus and Greece.
How do I register?
Visit our Courses page to choose your level and submit your application. Or [Contact Us] for help choosing the right course for you.
How can I become an AESI Instructor?
First, complete Level III, then enroll in our Instructor Course. Once certified, you’ll be qualified to teach all AESI levels, manage groups, and assist in instructor development.

Founder of AESI

Instructor

Instructor

Instructor
Certified AESI Instructor
Expanding in the
Mediterranean
Whether you’re exploring the depths of the Aegean Sea or the clear waters of the Mediterranean, AESI’s presence in these countries ensures that you’re never far from expert guidance and a supportive freediving community.
