BluehourFreediving · Koh Phangan
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A freediver gliding underwater in soft blue light

Freediving school · Chaloklum Bay, Koh Phangan

Dive deeper on one calm breath.

Small-group AIDA & SSI courses in the calm water of the Gulf of Thailand. Four students per instructor, a line in the bay every morning, yoga when the sky turns violet.

Find your level See start dates
  • 28–30 °Cwater, all year round
  • 1 : 4instructor to students
  • 0 → 40 mfrom Try to Level 3

Why freediving

The deepest part of a dive happens before you leave the surface.

A freediver resting at the surface under a wide sky A freediver swimming beside a large school of fish

No tank, no noise, no bubbles. Just a slow breath, a mask and a line dropping into the blue. Freediving teaches your body something it already knows: how to slow down.

We opened Bluehour in Chaloklum because the bay is sheltered, deep water is a 15-minute boat ride away, and the evenings here turn the colour of our name. Groups stay tiny, so every single dive is watched.

  1. I

    Breathe

    Slow, quiet breathing before every dive. We never teach hyperventilation.

  2. II

    Relax

    Relaxation saves oxygen. We train the mind first, the depth comes later.

  3. III

    Buddy up

    One up, one down. Every dive is watched from the surface — even the 5 m ones.

Courses & retreats

Six ways into the blue

Every course mixes theory, dry breathing work, shallow-water sessions and line dives in the bay. Prices include gear, boat and certification.

Course pathway

Follow the line down

Each level sits at the depth it usually takes you to. Tap a level for days, price and sample requirements.

Sample numbers. Exact requirements depend on AIDA or SSI standards — and on you. Depth is never the goal; a relaxed dive is.

Dry CO₂ table trainer

Train your breath-hold on land

A CO₂ table keeps the hold the same and shortens the rest, so your body gets used to the urge to breathe. Enter your comfortable max — we build 8 rounds.

Dry practice only

Never practise breath-holds in or near water — not in a pool, a bath or the sea. Sit or lie down, never alone, and stop at once if you feel dizzy or tingly. Learn the real technique with an instructor.

Your comfortable max hold
2:00

Not your record — a hold that still ends calmly.

Generated CO₂ table
RoundBreatheHold
Hold each round 1:00Session 17:00
Ready2:00Round 1 / 8

A day at Bluehour

From first light to blue hour

  1. Breathwork on the deck

    Twenty minutes of quiet breathing and stretching, facing the bay.

  2. Theory & coffee

    Physiology, equalisation and safety, explained simply on a whiteboard.

  3. Line session in the bay

    Longtail to the buoy in 15 minutes. Ninety minutes on the line: one diver down, one watching.

  4. Lunch & a long rest

    Thai food on the beach. Nobody dives on a full stomach.

  5. Pool or dry training

    Static, dynamic and rescue drills — or a debrief with your own dive videos.

  6. Blue-hour yoga

    Slow yin yoga while the sky over Chaloklum turns violet.

A swimmer in the sea at sunset
17:45 — the bay at blue hour

Calendar & price

Choose a start date

The next 8 weeks. Groups of 4 (retreats 8). Seats update as people book.

1 · Course

2 · Start date

AvailableSelectedFull

3 · Stay & extras

GuestsUp to 4 per booking
1
Bungalow nightsGarden bungalow, 3 min walk · ฿1,200 / night
0
Yoga & breathwork pass5 dusk classes · ฿1,800 per person

Book your seat

Medical statement

Do any of these apply: heart or lung condition, epilepsy, recent ear or sinus surgery, pregnancy, history of blackouts?

Demo form — nothing is sent.

Instructors

Three coaches, one rule: we watch every dive

A freediver underwater in a black swimsuit

Ploy Rattanakul

Founder · AIDA & SSI instructor

Grew up in Surat Thani and has taught freediving for nine years. Calm, precise and very good with nervous first-timers.

Best depth
52 m
Teaches in
TH · EN
A man in a wetsuit swimming in the ocean

Elias Marenco

Depth coach · yoga teacher

Former swim coach from Valencia who leads the retreats. Teaches mouthfill like a patient puzzle, one piece a day.

Best depth
47 m
Teaches in
EN · ES
A woman underwater in clear water

Fon Chaiwong

Safety lead · SSI instructor

Born on Koh Phangan. Runs the boat, the buoy and the safety line, and briefs every session like it’s the first.

Best depth
40 m
Teaches in
TH · EN · KR

Reviews

Written by people who were nervous too

FAQ

Before you ask

Still unsure? Message us — we answer within a few hours, 08:00–18:00.

Contact

Come and float with us

North end of Chaloklum beach, next to the pier (fictional address). Not sure which level fits? Message us before you book.

Office open daily 08:00–18:00 · Free pick-up in Chaloklum and Haad Salad

Email[email protected]
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In the real site you’d get a confirmation email within 2 hours. This demo sends nothing.