Koh Ha
Ko Haa Scuba Diving Highlights
Ko Haa, located within a protected marine park, is one of Thailand’s premier scuba diving destinations. Comprising six uninhabited limestone islets, Ko Haa offers a range of underwater experiences—from relaxed lagoon dives to thrilling cavern explorations—making it perfect for both beginners and experienced divers.
Top Dive Sites
The Chimney
A narrow vertical swim-through resembling a chimney, this site offers a fun and unique diving experience. As you ascend or descend through the passage, you’ll be surrounded by vibrant corals and schooling fish.
The Lagoon
A shallow, crystal-clear lagoon encircled by towering limestone cliffs. Ideal for snorkeling and beginner divers, thanks to its calm waters and gentle depth.
The Cathedral
A breathtaking cavern with high ceilings and intricate rock formations. Sunlight often streams through the entrance, creating a dramatic, almost spiritual underwater scene—popular among photographers and cave diving enthusiasts.
Other Dive Features
Underwater Pinnacles
Towering rock spires that rise from the seabed, offering habitats for a variety of marine species and great visibility for observation.
Drop-Offs and Walls
Sheer underwater cliffs that plunge into deeper water, home to schools of fish, pelagics, and colorful soft corals.
Boulders and Caverns
Massive rock structures and interconnected chambers provide exciting routes for exploration.
Swim-Throughs
Natural underwater tunnels and arches that add an adventurous element to your dives.
Marine Life at Ko Haa
The waters around Ko Haa are teeming with marine biodiversity. Common sightings include:
Barracudas – Sleek, fast-moving predators often seen in schools.
Ghost Pipefish and Pipefish – Masters of camouflage, blending perfectly into the reef.
Turtles – Frequently spotted grazing on seagrass or cruising by divers.
Pufferfish and Porcupinefish – Known for their ability to inflate when threatened.
Harlequin Shrimps – Small, vividly colored crustaceans with striking patterns.
Nudibranchs and Sea Moths – Colorful, exotic, and a delight for macro photographers.
Scorpionfish and Lionfish – Venomous and well-camouflaged ambush predators.
Occasional Visitors – Whale sharks and manta rays, often seen during the right season.
Why Dive Ko Haa?
With water visibility often exceeding 20 meters, Ko Haa offers exceptional diving conditions almost year-round. Dive depths range from 3 to 50 meters, making it suitable for all skill levels. The journey from Ko Lanta takes around 1 hour and 45 minutes by boat—just enough time for breakfast and a detailed dive briefing.
Whether you're exploring dramatic caverns, floating through tranquil lagoons, or searching for rare critters, Ko Haa delivers a rich and unforgettable underwater adventure.
October 1, 2026
+179 More