About this expedition
Granite swim-throughs and Andaman Sea pelagics on a classic liveaboard safari.
Why this expedition
Iconic granite boulder swim-throughs
Richelieu Rock — manta & whale-shark hotspot
Koh Bon & Koh Tachai pinnacles
Up to 4 dives a day including night dives
Best of Thailand's diving in one trip
Day by day
- Day 1
Board in Khao LakBoarding, check dive and safety briefing.
- Day 2
Similan bouldersSwim-throughs, soft corals and reef fish across three dives.
- Day 3
Koh BonManta ridge and a drift along the limestone wall.
- Day 4
Koh Tachai & Richelieu RockThe trip's big-fish day — barracuda tornadoes and maybe a whale shark.
- Day 5
Richelieu Rock encoreA second crack at the Andaman's richest pinnacle.
- Day 6
Boon Sung wreckMacro-rich wreck and final reef dives; de-gas before flying.
- Day 7
DisembarkBreakfast and transfer back to Khao Lak/Phuket.
Who this trip is for
CertificationAdvanced Open Water (or Open Water + Deep)
ExperienceMinimum 20 logged dives
Come preparedAround 20 logged dives · Some sites reach 25–30 m · Nitrox certification useful for repetitive diving
We verify every diver’s certification before confirming a slot — it keeps the group safe and the diving relaxed. Not quite there yet?
Level up with a course and join a future expedition.
What's included
Included
- ✓ 7 nights full-board cabin
- ✓ Up to 3–4 guided dives/day
- ✓ Tanks, weights & guide
- ✓ Marina transfers
- ✓ Nitrox for certified divers
- ✓ iDive trip host
Payable / not included
- + International flights
- + Thailand visa (if applicable)
- + National-park fees
- + Equipment rental
- + Crew gratuities
- + Travel & dive insurance
Good to know
Is this trip good for an Intermediate diver?
Yes — with around 20 dives and an AOW (or OW + Deep) card you'll be comfortable. Sites range from easy reefs to deeper pinnacles, so there's something for everyone.
Will I see mantas or whale sharks?
March at Koh Bon and Richelieu Rock is peak season for both, though sightings are never guaranteed with wild animals.
Do I need Nitrox?
Not required, but with up to four dives a day it extends your bottom time and adds a safety margin. You can certify before the trip.
