Liveaboard diving in Thailand takes place on the west coast of Thailand at the Stunning Similan islands and also at Hin Daeng in the south. These are the best liveaboards in Thailand at this time. Please click on the boat to see more or follow this link to find out more about
diving in Thailand.
Arguably the best diving

in Thailand is done by liveaboard cruises leaving from or around Phuket island and heading either to

the south or the north. In the south there is the stunning Hin Daeng and Hin Muang, Koh Ha and Koh Phi Phi island. Hin Daeng and Hin Muang are 2 open water pinnacles about 40 miles from the mainland creating a magnet for the local marine life and also for some of the world biggest pelagics. This is a common area for Manta rays and also

sometimes whale sharks. Although there is no guarantee of this there is more than the average amount of siteings of both here as they stop in on there migratory route up the coast. Named for the stunning

soft corals that cover both pinnacles these 2 sites are without doubt 2 of the best in Thailand. Koh Ha is a series of 5 islands mid way between Hin Daeng and the mainland and are famous for their caves. Stunning limestone islands have suffered waves action over the eons and have devolped caverns and chinmeys that are an exciting and unusual dive in this area of the world.
In the north there is the beautiful
Similan islands, Koh Bon, Koh Tachai and Richelieu rock. The Similans are series of 9 tropical islands in the middle of the Andaman sea. Stunning soft corals are the trademark of this area

and the Andaman sea and in abundance in the Similans and coupled with the stunning bolders that create some of the sites it's an area full of surprises. Koh Bon further north is famous for it's high sitings of manta rays and Koh

Tachai and Richelieu are 2 stunning open water pinnacles that attract all the pelagics in the area inlcuding, sometimes, whalesharks.
Thailand liveaboard trips
leave either from Phuket island or Thaplamu north of Phuket. Similan islands trips are normally 4 night trips visiting the Similans, Koh Bon, Koh Tachai and Richelieu rock. Hin Daeng liveaboard trips in the south take place over the weekend for a 3 night 8 dive safari visiting Hin Daeng, Hin Muang, Koh Ha and the island of Koh Phi Phi including a land visit to Koh Phi Phi.
Dive sites
Boulder City (Island Three - Koh Payan)

Boulder City lies some 200 meter south of Koh Payan. The dive site is completely submerged with tw

o mooring buoys to mark the location, one at the north end and one at the south. Descending down the north line takes you to 20 meters and the south line to 30 meters. This is a dive in the 20 to 30 meter mark making it not a long dive but the underwater scenery here is spectacular with large granite boulders some bigger than a house, with swim-throughs and the chance of swimming with large pelagics. Eagle and
manta rays cruise around the large boulders while large fan tail rays rest in the sandy bottom. This is also where I have been lucky enough on two separate occasions last season to witness the mating of leopard sharks. With a family of large humphead parrot fish and napoleon wrasse living in the area the beautiful soft corals and large gorgonian sea fans make this an eye opening dive site with the occasional whale shark cruising past.
Koh Miang # 4 Honeymoon Bay
Honeymoon Bay is a beautiful bay on the back side of island 4 with its quiet beach and tranquil bay it’s the perfect place for a snorkel or our sunset dives on the gentle slopping reef down to 24 meters. In the shallows around the coral heads you will find octopus, crabs and mantis shrimps on the hunt for food.
With the occasional hawksbill sea turtle and white tip reef shark patrolling the reef will keep you busy on your dive.
Koh Payu # 7 Deep Six

Deep six lies

on the northern tip of island 7 and has a buoy line running down to 18 meters there as the name implies you can descend down to over 60 meters. Here the dramatic underwater boulders have formed some excellent swim throughs, tunnels and canyons that make this an exciting dive. But down in the soft coral garden the largest gorgonian sea fans in the Similans survive untouched. With the occasional manta ray gliding passed in the blue will make for an enjoyable dive.
Elephant Head, Hin Pousar
This is probably the m
ost famous dive site in the Similan Islands, it lies in betwee
n island 7 (Koh Payu) and island 8 (Koh Similan).
With three large rocks breaking the surface these granite boulders run down to over 50 meters. This is an exciting dive. Not too much coral growth but the way the boulders are lying on top of each other has left an intricate web of tunnels and swim- throughs. Large overhangs with oriental sweetlips and harlequin sweetlips which are only found in the Andaman sea hang around in small groups to escape the currents. Coming in and out of the tunnels keep an eye open for the colorful clown triggerfish and the white tip reef sharks resting on the bottom. Currents can be quite strong sometimes but this makes for an exciting and fun dive.
Koh Bangu #9 North Point
North point lies on the west side of the island with a dramatic underwater scenery of large boulders with canyons and swim throughs. As you descend down the line passed the tall fin bat fish and head through the tunnels, keep your eyes open for a pair of Napoleon wrasse. In between the large canyons grow large gorgonian sea fans with excellent soft corals hiding harlequin ghost pipe fish but a look out into the blue can be rewarding with frequent visits from the graceful manta ray passing over head.
Koh Bon - The Pinnacle
Koh Bon island lies 12 nautical miles south of Koh Tachai
island and the dive site is located around 150 meters north west of the
island and has no bouy line so location is by GPS. When the captain signals its time to jump into the blue and descend down to the pinnacles. The top is around 18 meters and continues to run down to over 50 meters to the sand bottom were the docile leopard shark sleeps while white tip reef sharks patrol the reef in search of a meal.
These amazing pinnacles are covered with colourful soft coral trees, large gorgonian sea fans and barrel sponges running down the walls. With 5 species of clown fish in the magnificent anemones and their shrimp and porcelain crab hosts its difficult to keep your eyes of the pinnacles but a look out in to the blue can be rewarding with manta rays gliding around and the occasional whale shark. But don’t forget to keep a check on your air supply as its time to head back to the surface and leave these beautiful creatures behind.
Koh Tachai Island - The Dome
Koh Tachai lies
22 nautical miles south of Surin, the dive site is located around
200 meters south of the island and is marked with a bouy line which descends down to 16 meters to reach the top of the plateau. From here you decide which way to go ? North or South. North takes you over the plateau to the beautiful coral garden at around 22meters to 26meters with some of the best soft corals and sea fans in the area, which will keep underwater photographers busy. South takes you down over the large boulders to between 36meters and 40meters to reach the sandy bottom looking for the docile leopard shark and large stingrays. Up above schooling great barracudas with tunas and trevallys darting down to catch the baitfish hanging around the reef. With a multitude of small creatures to look at try not to forget a look into the blue to see the manta rays gliding past and the occasional whale shark make Koh Tachai a spectacular dive site.
Richelieu Rock
Richelieu lies 7.5 nauti
cal miles east of the Surin islands national marine park. Here this large rock pinnacle just breaks the surface at low tide and descends down to around 33 meters to the sandy bottom. The northern side has an excellent wall with lots of cracks and holes for you to look inside. The wall is covered with coral and zig zag oysters where you can find over ten species of moray eels like the commonly spotted white eyed, giant, yellow edged, and bartail morays or the shy dragon, leopard, honeycomb and zebra morays.
The wall is
all so home to many species of shrimps from the cleaners, anemone, saron, squat and the colorful harlequin shrimps. The west side contains mostly soft corals and sea fans with ghost pipefish and tigertail sea horses hiding in between the branches. But its here where we all so encounter large schools of silver jacks and bluefin trevallys with chevron and great barracudas too.
Its also home to the gentle giant the whale shark anywhere from 2 meter babys to 8 meter subadults. The walls seem to move with so much life or look closely at the camouflaged scorpion, stone and lionfishes that blend in to the rock. A truly spectacular dive site no matter what the visibility.
Koh Bida Nok and Koh Bida Nai Islands - Koh Phi Phi
These two uninhabited islands lie south of Phi Phi and are a Mecca for
leopard sharks. These harmless and docile creatures are usually sleeping around the sand and coral banks of the islands usually no deeper than 20 meters. With Bida Nok as the larger of the two it
offers great hard and soft corals with turtles and sea snakes passing bye. The deeper of the two with depths to 30 meters on the west side wall teeming with life from lionfish to baby morays poking there heads from the cracks and well camouflaged octopuses blending in to the rocks will keep your eyes busy on this dive site.
Bida Nai island smaller and slightly shallower offers the chance to see the
sleeping leopard shark anywhere from 1 to 10 sharks resting on the bottom in between the staghorn corals. Here the soft corals are abound with their beautiful colors but look closely at the sea fans to find the Tiger-tail sea horse. With two swim-throughs covered in small baitfish and shrimps, lots of colorful reef fish and schools of barracuda and trevallys darting over the reef, and not forgetting the many nudibranches along the way make this a wonderful dive site.
Koh Ha Islands
Koh Ha is a gr
oup of five magical uninhabited islands, unspoiled and usually offering crystal clear waters. One of the highlights is diving the Twin Cathedrals, a large cave system that has formed into two large domes with a passage between them. We also dive the Chimney, a separate dive site on island no.1. The chimney starts at 17 metres coming all the way up to 5m with a side passage into another cavern, when the
light is right and it comes through the holes in the ceiling it's a magical dive.
Koh Ha island 4 is a macro dive that most of our customers love. starting shallow you swim around a small island looking at Harlequin shrimps, frogfish, ghost pipefish and a very friendly turtle. This whole island group is a h
aven for marine life and divers alike! – awesome beauty with caverns, caves, chimneys, swim throughs, soft coral covered walls, coral heads and sea bed. The marine diversity here will suit all divers with interesting macro such as pegasus (sea moth) and rare nudibrancs and good fish action plus squid, cuttlefish, lobsters, morays and more.
Hin Muang (Purple Rock) and Hin Daeng (Red Rock)
Purple rock is completely submerged with a bouy line running down to 18 meters in
the center of the rock. Hin Muang is basically one very large rock with steep walls running down to over 50 meters with 6 pinnacles on the top. The shallowest being 10 meters from the surface. The rock lies in a north to south direction making navigation around the rock easy. The rock is surrounded by plankton rich water making it a popular place to see manta rays and possibly a whale shark. Hin Daeng has three large rocks that break the surface and a mooring bouy on the east side that descends down to 14 meters. Here the walls are covered with small red soft coral trees with shrimps and morays in every crack. The south east descends down to over 60 meters with large pelagics cruising in to be cleaned by the cleaner wrasse including devil rays, manta rays and whale sharks, with large schools of barracuda and tunas. Down to the west side on the slopping sand patches are the leopard sharks sleeping on the bottom. Visibility at both sites is usually very good with 20 meter plus.