Freediving Certification: AIDA vs Molchanovs vs PADI vs SSI

The four freediving certification systems you’ll meet most often, AIDA, Molchanovs, PADI and SSI, teach very similar fundamentals at entry level: relaxation and breathing, equalisation, duck dives and finning, safety and rescue. Each entry course ends with comparable pool and depth tasks, and most schools accept the other agencies’ cards when you move up a level. For a first course, the instructor and the conditions where you learn matter more than the logo on the card.

The four agencies in brief

AIDA is the international freediving federation, founded in 1992. Besides education, it sets competition rules and ratifies world records. Its course ladder runs from AIDA 1, a short introduction, through AIDA 2, 3 and 4, then on to instructor levels. It only does freediving.

Molchanovs is an education system built on the training methods of Natalia Molchanova, one of the most decorated freediving athletes in history, and developed by her son Alexey Molchanov and his team. It splits courses into Lap levels (pool) and Wave levels (which include depth) and is known for structured training programmes. Like AIDA, it focuses only on freediving, and the brand also makes freediving equipment.

PADI is best known as one of the largest scuba training organisations in the world, and it added a freediving programme in the mid-2010s. Its levels include Basic Freediver, Freediver, Advanced Freediver and Master Freediver, and you’ll often find it at scuba centres that also teach freediving.

SSI (Scuba Schools International) is another large scuba agency with its own freediving line, from a pool-based introduction up through numbered freediver levels. It’s common in dive centres across Southeast Asia, and its learning materials are mostly digital.

Other organisations, such as CMAS, also train freedivers, but these four are the ones most Indian divers come across at home and on trips.

Entry-level freediving courses compared

The table below is a rough guide at the time of writing. Agencies update their standards, and course names and numbers change, so check each agency’s current standards before you book.

	AIDA	Molchanovs	PADI	SSI
Introductory or pool option	AIDA 1	Lap 1 (pool)	Basic Freediver	Pool-based introduction
Main entry course	AIDA 2	Wave 1	Freediver	Level 1 Freediver
Typical static target	About 2 min	Check current standard	About 1 min 30 s	Check current standard
Typical dynamic target	About 40 m	Check current standard	About 25 m	Check current standard
Typical depth range	About 12–20 m	Roughly 10–20 m	About 10–16 m	Roughly 10–20 m
Freediving-only agency	Yes	Yes	No	No
Where you’ll usually find it	Freediving schools	Freediving schools	Dive centres and freediving schools	Dive centres and freediving schools

The headline from the table is how similar it all is. The targets are modest and designed to be reached by relaxing, not straining, and most healthy people who swim comfortably and can equalise get there.

What every entry-level course has in common

Whichever agency you choose, a decent entry course covers:

• Breath-hold physiology, and why hyperventilation is dangerous
• Relaxed breathing and a calm breathe-up before each hold
• Equalisation, usually including an introduction to the Frenzel technique
• Duck dives, finning and free immersion on a line
• Static and dynamic breath-holds in a pool or sheltered water
• Blackout and loss of motor control: recognising them and rescuing a buddy
• Surface protocol and recovery breathing
• The buddy system, with one diver down and one watching from the surface

If a course you’re considering skips rescue practice, that’s a problem, whatever the agency.

Where the agencies differ in practice

The differences are real, but they’re mostly about style and what comes after the first course.

Training structure. Molchanovs is known for structured training plans that run alongside its courses. AIDA’s courses use the same disciplines as its competitions, which appeals to divers who might compete one day. PADI and SSI fit freediving into a wider dive-centre world, which is convenient if you also scuba dive.

Who teaches. AIDA and Molchanovs courses are usually taught by freediving specialists. PADI and SSI freediving courses are often run at scuba centres, sometimes by excellent dedicated freediving instructors and sometimes by scuba instructors who teach freediving on the side. Ask who will teach you and how much they freedive themselves.

Pool pathways. For divers in Delhi, Hyderabad or Pune, pool-only courses are useful, and each agency has some form of pool introduction. Molchanovs’ Lap track is built entirely around the pool. Our guide to pool training for freedivers covers what you can practise after a pool course.

Learning materials. Each agency has its own manual or digital course, and the style varies. Some people take in physiology best from a printed manual, others from short videos and app quizzes on the metro home. Ask your instructor which materials come with the course and whether you can start them before you arrive.

Where you’ll travel. Popular destinations such as Dahab, Bali, the Philippines and Koh Tao have schools teaching all four, so availability rarely decides it.

Can you switch agencies later?

Usually, yes. Freediving schools commonly accept a card from another major agency as proof of entry-level training and let you join their next level after a skills check, extra theory or a short crossover session. Policies vary by agency and by instructor, so ask before booking.

That’s one reason the first card matters less than people expect. Plenty of freedivers hold cards from two or three agencies, collected as they trained in different places with different instructors.

Why the instructor matters more than the agency

All four agencies set minimum standards. Within those standards, one instructor might run three students per line with an assistant, a lanyard and oxygen on the boat, and another might run a crowded line with no backup. One might try four different explanations of equalisation until one works for you; another might simply tell you to try harder.

Those differences shape how much you learn and how safe you are far more than the name on your card. Our ten questions to ask a freediving instructor help you find out before you pay.

Safety: A certification shows you’ve been trained, not that you’re safe to dive alone. At every level, freedive with a trained buddy watching you, one-up-one-down, and never hyperventilate before a breath-hold.

How to choose your first freediving course

A simple way to decide:

1. Start with where and when you can go. Pick a location and dates that suit you, then see which agencies the good instructors there teach.
2. If you already hold a PADI or SSI scuba card and like the idea of one dive centre for both, their freediving courses fit well.
3. If you’re drawn to structured training or competitions, AIDA and Molchanovs are natural homes, though you can switch later.
4. If you’re far from the sea, start with a pool course and add depth on your next trip.
5. Choose the instructor last and most carefully.

To see what the main entry courses involve, read our guides to the AIDA 2 course and Molchanovs Wave 1, or the bigger picture in getting a freediving certification in India. We’re building an online community for Indian freedivers. It’s coming soon, so stay tuned.