Freediving in Cambodia
Including Koh Preab, Koh Rong Samloem, and Koh Tang Island. On the map.
The vibe
Freediving is a niche pursuit here, offering a quiet, meditative environment that lacks the commercial infrastructure of major hubs. You are best off visiting when the seas are calm and the water is still, allowing for long, uninterrupted sessions. It is a very local, self-directed experience where you will likely be the only one on the line.
Koh Preab
Khaet Preah Sihanouk
Dmitry Makeev / Wikimedia Commons (CC BY-SA 4.0)
Located near the coast of Sihanoukville, this island offers accessible reef structures suitable for breath-hold practice. The water clarity is generally good, allowing for comfortable observation of the local marine ecosystem on a single breath.
Access. Easily reached by a short boat ride from Sihanoukville. Freediving practitioners often utilize local specialized boat operators who cater to small groups interested in apnea rather than scuba.
Notes. Be aware of boat traffic near the island shore; use a dive buoy at all times.
Koh Rong Samloem
Khaet Preah Sihanouk
Eric Seigne / Wikimedia Commons (CC BY-SA 4.0)
This island offers calm, protected bays with sandy bottoms and rocky outcrops that provide accessible depth for freediving training. The clear, warm waters are ideal for beginners looking to practice breath-hold techniques away from the heavy boat traffic of the mainland.
Access. Accessible via ferry from Sihanoukville; dedicated freediving instructors and small-scale apnea workshops operate directly from the island's main beach resorts.
Notes. Be mindful of boat traffic near the main piers; always use a dive buoy.
Koh Tang Island
Khaet Preah Sihanouk
Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center / Wikimedia Commons (Public domain)
Located further offshore, Koh Tang features dramatic underwater topography including steep walls and pinnacles that drop into deep, clear blue water. It is a premier destination for experienced freedivers seeking depth training and open-ocean conditions.
Access. Requires a multi-day liveaboard or specialized boat charter from Sihanoukville, often organized by freediving schools based in Koh Rong Samloem.
Notes. Remote location; currents can be strong, requiring advanced safety planning.