How to Start Freediving: A Complete Beginner’s Guide

The first time you descend to 10 metres on a single breath, something changes. It’s hard to describe precisely – the silence is part of it, the weightlessness is part of it, but there’s also something in the act of entering the ocean’s depth on its terms, with only what your body contains, that most people weren’t expecting to feel.

Getting there takes practice. But not as much as you’d think.

What Freediving Actually Involves

Freediving is breath-hold diving – descending on a single breath, exploring, and returning to the surface before needing air. Competitive freedivers hold their breath for 8+ minutes and reach depths below 200 metres. Recreational freedivers are doing something considerably more modest and considerably more accessible: 2-4 minute breath-holds, 15-30 metre depths, and the experience of genuinely swimming with marine life rather than hovering behind a regulator.

The physiological key is the mammalian dive reflex – a set of automatic responses your body makes when your face contacts cold water. Heart rate drops. Blood vessels in the extremities constrict. Spleen contracts and releases oxygen-rich blood. Your body already knows how to do this. Training is largely about getting out of your own way.

The Breath-Up: Where Most Beginners Go Wrong

Beginner freedivers almost universally hyperventilate before their dive, mistakenly believing that packing in more oxygen will let them stay down longer. This is backward and potentially dangerous. Carbon dioxide (CO2) – not oxygen depletion – is what triggers the urge to breathe. Hyperventilating flushes CO2 without adding meaningful O2, which means you lose the warning signal before you’re actually hypoxic. This is how shallow-water blackout happens.

Correct breath preparation looks like: 2-3 minutes of calm, diaphragmatic breathing at rest. One final deep breath (not a hyperventilating series). Relax completely. Descend.

This is the single most important technical concept in freediving, and it’s worth understanding thoroughly before you enter the water.

Equalisation

Your ears need to equalise pressure as you descend – the same principle as in scuba diving, but in freediving you need to do it continuously and efficiently because you have no time to stop and fiddle. The Frenzel technique (using tongue movement to compress air from your mouth into your Eustachian tubes) is more efficient than the Valsalva maneuver most beginners know. Learning Frenzel properly unlocks comfortable descents past 15m.

Practice equalisation dry, on land, before you get in the water. You can learn the tongue mechanics sitting on your couch.

Where to Learn

An AIDA2 or SSI Freediver course is 2 days and teaches you everything you need for recreational freediving to 20m. Cost varies by location: €150-200 in the Mediterranean, $200-300 in the Philippines, $250-350 in Indonesia. Amed (Bali), Dahab (Egypt), and Coron (Philippines) are the three best-value freediving training destinations in the world.

Never freedive alone. The buddy system in freediving is non-negotiable – not because you’ll panic, but because shallow-water blackout is silent and requires an external observer.

We put together the Freediving Beginner Masterclass – a complete guide covering breath training, equalisation technique, the dive reflex, gear selection, safety protocols, and the best destinations to train by depth level. Get it at oceanicfreedom.gumroad.com/l/gdwhql for $12.99.

Your First Open Water Dive

When you get in the water for the first time with proper instruction, you’ll be surprised how far your body naturally goes. Most people reach 10m on their first or second training session without significant effort. The ocean cooperates with a relaxed body. It resists a tense one.

Start at the surface. Breathe slowly. Then go find out what’s below.

📖 See also: Complete Scuba Diving Guide – destinations, seasons, expert tips.