Have you ever trained in a freshwater lake?
No current, no waves, no tide — only still, cool freshwater.
Because of the water’s composition, your buoyancy changes and so your dive, giving you new sensations and the chance to refine precision, control, and reconnect with yourself underwater with every dive.
At Cortex Freediving, our certified instructors bring over 10 years of experience and hundreds of dives in Song Hong. Due to its complexity — including extreme depth, lack of light, and freshwater buoyancy — we strongly advise against diving there without proper supervision.
To ensure a safe and comfortable experience for all participants, a minimum certification of AIDA 3 or Molchanovs Wave 2 is required.
We offer a unique freediving experience in one of Thailand’s most stunning natural resorts:
* To join Sa Keao Trip
** To join Song Hong Trip
We offer a unique freediving experience in one of Thailand’s most stunning natural resorts:
Beachfront Location: Train right on the beach with panoramic views of the iconic Railay cliffs and enjoy private access to our pool and boats..
Diverse Dive Sites: Explore everything from emerald freshwater lagoons to open-ocean dives and mesmerizing underwater caves.
Rich Marine Life: Encounter blacktip reef sharks, colorful corals, and vibrant tropical fish in crystal-clear waters.
Personalized Instruction: Small groups with expert instructors focused on your individual progress and safety.
Exclusive Perks: 5% discount on future courses at any Cortex Freediving Center in Thailand.
Learn more about our facilities.