Koh Haa One

We love diving Koh Haa due to the usually good visibility, wide range of underwater geology, extensive coral reefs and diverse marine life. The six islands at Koh Haa are also some of the best dive sites in southern Thailand.

Diving Koh Haa One

The most northerly of the Koh Haa Yai islands is Koh Haa One, with a dramatic west side characterised by steep walls and huge rocks, and a more shallow east side, a mix of wall and sloping reef.

At the east side of Koh Haa One, a large rocky ridge runs from the edge of the island into the deeper water of the north east, creating a long coral encrusted finger visible from the surface, and teeming with life.

Koh Haa - The Chimney

At the south west edge of Koh Haa One lies a series of swim throughs and caverns known as 'The Chimney', which is one of the highlights of diving the Koh Haa islands.

With several shallow entrances, a large, central chamber around 8 - 9m, an exit around 17m, and another shallow exit into the 'fish bowl' some parts of The Chimney can get a little narrow in places making it suitable for more experienced divers.

At the bottom of The Chimney lies a dense garden of white and lilac soft corals around 20 - 22m where the occasional turtle is found, along with stingrays, snapper, trumpet fish and many others.

Giant chunks of rock, fallen from the island above, lie in the sand to the south east of The Chimney - check the deep cracks in these boulders for huge snapper, grouper, and other species sheltering from the divers.

For the macro underwater photographer, countless nudibranchs, tiny crabs, shrimp, seahorses and ghost pipefish are just some of the many species to be found around the wonderful island of Koh Haa One.

Koh Haa One is usually dived along with Koh Haa Yai or Koh Haa Lagoon.

Snorkeling at Koh Haa One

The south face of the island provides the best shelter from any possible winds from the north east, with plenty of coral and marine life to see in the shallow water right up to the sheer rock face of the island.

Dive Site Guide : Koh Haa One

Visibility:	15m - 30m +
Level of Diving:	All Levels
Snorkeling:	Yes
Depth:	3m - 35m +
Journey Time:	25 - 35 mins

Find out more at the Thai Department of National Parks.

• Minimum Open Water Diver, or equivalent.
• All trips are 2-tank dives. Includes free equipment rental, lunch & soft drinks on the boat.
• Scuba Skills Refresher for extra ฿900 when Booked Online (Normal Price ฿1,000)
• Does not include Marine Park Diving Fee: Adult ฿600, Child: ฿400 per day.

Our Boat Trip Schedule

Our dive trips depart Koh Lanta in the morning every day from the south end of Long Beach, returning to Koh Lanta around 1:30 - 2pm, depending on how the day goes.

• All trips are 2 dives a day
• Trips depart from the beach at our dive shop @ Lanta Castaway Beach Resort
• Trips Depart 8/9am, return 2pm
• Dive & Relax is open from Oct 15 - May 15.
• E-mail us info@diveandrelax.com in advance with any questions, or to make a booking.

We may schedule a Shark Point & Anemone Reef dive trip or a KledKaeo Wreck dive trip upon request. A minimum of 5 divers are required for these trips, please let us know if you are interested.

We love to dive as much as possible during the high season, however all our dive trips depend on the weather, sea conditions, currents and minimum numbers and may be subject to change at short notice.

For more information on our weather and climate, check out the best time to visit Koh Lanta.