Fauneya

Dive with reef mantas at Koh Bon, the best manta site in Thailand's Similan and Surin marine parks in the Andaman Sea. A submerged ridge on the island's west side forms a cleaning station where large mantas glide in almost daily during the season, reached by liveaboard or day boat from Khao Lak. The park is open and mantas are around from November to April, best from February to April.

Reef Manta Ray in Koh Bon / Similan Islands (Thailand)

expeditionHardDiving

About This Spot

Dive with reef mantas at Koh Bon, the best manta site in Thailand's Similan and Surin marine parks in the Andaman Sea. A submerged ridge on the island's west side forms a cleaning station where large mantas glide in almost daily during the season, reached by liveaboard or day boat from Khao Lak. The park is open and mantas are around from November to April, best from February to April.

Best Months to Visit

Up to 82% sighting chance in Koh Bon / Similan Islands (Thailand). Best months: February, March, January.

  • February: 82%
  • March: 82%
  • January: 78%
  • April: 76%
  • December: 74%
  • November: 68%

Practical Information

  • Location: Koh Bon / Similan Islands (Thailand)
  • Coordinates: 8.5700, 97.8500
  • Effort: expedition
  • Accessibility: Hard
  • Observation mode: Diving

Frequently Asked Questions

When can you dive with mantas at Koh Bon?

From November to April, when the Similan and Surin marine parks are open, with the peak from February to April.

Are sightings guaranteed?

No, but Koh Bon's west ridge cleaning station gives Thailand's best chance, with large mantas seen almost daily in season.

How do you get there?

By liveaboard or a long day-boat trip from Khao Lak; the Similan and Surin national parks close roughly mid-May to mid-October.

What else might you see?

Whale sharks pass through, especially around nearby Koh Tachai and Richelieu Rock, along with reef sharks and rich coral life.

Other Spots for Reef Manta Ray