Koh Tachai
A submerged plateau that funnels current — and everything that rides it. Tachai is where the liveaboard crowd gets its whale shark stories.
Highlights
- The Dome pinnacle
- Big schools of barracuda
- Whale shark encounters
What you'll see
Photos: luluchouette, Pakpoomphoto, Tubtim.r via Wikimedia Commons · licences
What the diving looks like.
Original footage from Andaman dives, chosen to match the pinnacle terrain and marine life you can expect at Koh Tachai.
Koh Tachai, in brief
- How deep is Koh Tachai?
- Koh Tachai ranges from 12 to 40 metres and is suited to advanced divers. It is a pinnacle dive with strong current.
- When is the best time to dive Koh Tachai?
- The season is Oct 15 – May 15. Expect 15–30 m visibility and 27–29 °C water.
- How do you get to Koh Tachai?
- Liveaboard · Khao Lak. It is in the Similan Islands area at 9.0580° N, 97.8117° E.
- What marine life can you see at Koh Tachai?
- Whale shark, Manta ray, Barracuda, Tuna. Highlights include the dome pinnacle; big schools of barracuda; whale shark encounters.
Gear we'd bring to Koh Tachai
Editor's pickSuunto Ocean
The first dive computer we actually wear between dives. Maps, GPS on the surface, and an AMOLED screen you can read at 30 m in Similan sun.
Current fighterScubapro Seawing Nova Fins
When Koh Tachai's current runs, you want the fins that got us back to the line. Also the ones that look like a bird.
EssentialDive Rite 6 ft SMB + Spool
Drift dives at Koh Bon end in the blue. Every guide will ask if you have one. Have one.
Trips that diveKoh Tachai
- Liveaboard
Similan Islands Liveaboard · 4 Days
Four days, fourteen dives, one route north from the Similans to Richelieu Rock. The single best diving week you can buy in Thailand.
- Liveaboard
Richelieu Rock Express · 2 Days
Short on time, long on ambition. Koh Bon, Koh Tachai and Richelieu Rock in two days out of Khao Lak.
