Koh Rok & Koh Haa

Two national park islands in a single day by speedboat — white sand at Koh Rok, and the lagoon and cathedral caverns of Koh Haa.

Koh Rok and Koh Haa are the two places local people name when you ask where the water is clearest. They sit far enough offshore that visibility regularly runs past twenty metres, and the coral has never had a road built near it.

Koh Rok is a pair of twin islands with a channel of white sand between them. Koh Haa is five limestone outcrops with a sheltered inner lagoon and a set of caverns divers call the Cathedral — from the surface you can still see straight down the walls.

Getting to both in one day needs a speedboat. It is a longer, faster, saltier day than the longtail trip, and worth it for the water.

Highlights

• 20m+ visibility on a good day
• Twin-island sandbar at Koh Rok
• The inner lagoon at Koh Haa
• Buffet lunch on Koh Rok beach
• Four snorkel stops

How the day runs

1. 08:00

   Hotel pickup

   Collection from your hotel on Koh Lanta Yai.

2. 09:00

   Depart the pier

   Roughly an hour south to the national park.

3. 10:15

   Koh Haa lagoon

   Snorkel the sheltered inner lagoon and the cavern walls.

4. 11:30

   Koh Haa reef

   Second stop on the outer reef — bigger fish, deeper water.

5. 12:45

   Lunch on Koh Rok

   Buffet on the beach, then time on the sandbar.

6. 14:15

   Koh Rok Nai

   Hard coral garden in waist-to-chest deep water.

7. 15:00

   Sail home

   Straight run back to shore.

Times are indicative. Sea state, tide and the national park can all shift the running order — your guide will tell you on the morning if anything changes.

Where this trip goes

Koh Rok Twin national park islands with a white sandbar between them and some of the clearest water in the Andaman.

Koh Haa Five limestone islands around a sheltered lagoon, with cavern walls that divers call the Cathedral.