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Dive Sites

Local Dive Sites,
Similan Islands, Koh Bon,
Koh Tachai and Richelieu Rock
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Boonsung Wreck (Local Dive Site)

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on request, minimum 2 divers

One of the best half day trip sites is the outstanding wreck "Boonsung". Here you will find an old tin mining boat which sank in 1984 and rests in a depth of 20 meters. The boxing day Tsunami of 2004 separated the wreck into several parts, making the dive site bigger and even more attractive.

Over several years it became colonized by thousands upon thousands of fish, glad to be lucky enough to have an artificial reef in a vast expanse of sand.

Around the wreck, which locals describe as “fish soup,” you will pass through clouds of snappers, fusiliers, batfish, and trevally as you look for the special things living within the wreck and in the surrounding sand.

Crocodile fish, stonefish, scorpionfish, lionfish, ornate ghost pipefish, moray eels and much more reside with the kings of the site, the nudibranchs.

Type of Dive Wreck
Depth 18 meters
Visibility 10 - 15 meters
Temperature 20 - 28 degrees C
Difficulty Beginner / Intermediate



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Premchai Wrack (Local Dive Site)

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on request, minimum 2 divers

Though sunk on purpose in 2001 for the benefit of recreational diving, the Premchai is the twin sister of the Boonsung Wreck. As the Premchai was sunk after the Boonsung, it is not quite as heavily inhabited, but month after month more and more aquatic life is finding it’s home on this beautiful wreck.

Placed close to the Tablamu coast, the visibility is largely affected by the coastal tide. On a good day, the visibility may not get much better than about 10meters, but you can still hope to see a variety of nudibranch, mollusks, pipefish scorpion fish, cuttlefish, crocodile fish, mantis shrimp, orangutan crab, and moray eel.

Don’t expect to get any deeper than 22 meters, however, unless you bring a shovel. You’ll have to pay close attention to your deco limit because, although you can’t go any deeper than 22 meters, you will spend the majority of the dive between this depth and the top of the wreck, found around 16 meters.

We are using this wreck for the second dive after the deep dive at the Sea Chart

Type of Dive Wreck
Depth 22 meters
Visibility 10 - 15 meters
Temperature 20 - 25 degrees C
Difficulty Intermediate



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Sea Chart Wreck (Local Dive Site)

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on request, minimum 2 divers

MV Sea Chart 1 was in the process of transporting 1,200 logs of wood in its 3200 tonnes hold from Burma, heading across the Andaman Sea, down through the Straits of Malacca and then on to to its final destination in Vietnam. However, in August 2009, the bulk-carrier encountered problems not far from Thailand’s coast, where rough seas and severe weather battered the ship, causing multiple leaks in its hull. Water also leaked into the engine room and began to sink the vessel. All crew on board the Sea Chart 1 managed to escape on inflatable rafts soon to be rescued by a Thai Navy ship. MV Sea Chart, 84 meters long and 12 meters wide, now rests on her starboard side in 40 meters of water.

This fascinating ship wreck still with cargo aboard and many other original features makes a jaw dropping dive for wreck divers. A huge amount of marine life has already settled on this wreck. There is lots of Lionfish, a school of huge Batfish, several different unusual nudibranchs, a school of big Rainbow runners, a big old Baracuda, Octopus, Ghost Pipefish, Frogfish and many others. This is a dive site for more experienced divers and for our deep diver courses.

Type of Dive Wreck
Depth 30 - 40 meters
Visibility 5 - 15 meters
Temperature 20 - 25 degrees C
Difficulty Advanced



Rocky Point / North Point (Similans)

Monday

Huge boulders extend to 35 metres are surrounded by large areas of sand. The formations of adhering rocks create holes and a swim-through at around 20 metres. A steep gigantic boulder forms a scenic, elongated channel at 5 metres. Next to the channel are shallow fringe reefs that consist of staghorn and hard corals.

Resting on the sand, sometimes close to the boulders are leopard sharks and whitetip reef sharks. The sand is also habitat for many gobies and shrimps. Kuhl’s stingrays are always found buried under the sand. Schools of giant trevally, bluefin trevally, goatfish, surgeonfish and unicornfish often visit this site.

Type of Dive Boulder/Reef
Depth 10 - 35 metres
Visibility 20 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate



Christmas Point

Monday

This is definitely a dive site to bring your camera! With a maze of granite boulders and swim-throughs photos really capture the beauty of this site. Ribbon eels and Orange-spotted Pipefish can be seen around the edge of this dive site as well as Napoleon Wrasse and the occasional Eagle Ray. Anemones with Porcelain Crabs inhabit the crevasses and Nudibranches galore can be seen crawling over the boulders.

The huge granite boulders make this dive site what it is, and they are spread out in several batches towards the northwest and give both divers and the marine life plenty of places to swim, hide or investigate. The most popular is located at a depth of 24 metres, so it should be found and swim through during the first half of the dive.

There are others, though, some of which are more challenging than others. As the rocks and boulders become further from the island, they also become more scattered and in deeper water. Here is a good place to look out for resting sharks and rays, such as the Leopard/Zebra Shark and Whitetip Reef Shark.

Type of Dive Boulder
Depth 8 - 40 metres
Visibility 10 - 30 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate / advanced



Three Trees

Monday

On the northeast corner of Similan Island #9, Three trees or Batfish Bend has fantastic diversity, it is identified by the Three distinctive trees on the island marking the start point of the dive.

The dive starts with a 8metres shelf which slopes down to around 18metres in the sand, if you cross the sand for around 20 metres you will find boulder formations which go down to 30metres and many coral blocks on the way to them.

In the sand stingrays are common, as are garden eels. The boulders sometimes have leopard sharks around them. In the coral blocks on the sand look for the many cleaning stations with white stripe cleaning and Durban dancing shrimp.

Once back to the reef, which is, hard coral and whip corals, look for the many grouper, trigger fish and for the four napoleon Wrasse that are frequently spotted on this reef.

Long fin batfish are a visitor to this site, with them often following you for the dive as you make your way along the reef. In the shallow area look for the milkfish and hawksbill turtles that frequent the area.

Type of Dive Reef/Sand/Rocks
Depth 8 - 20 metres
Visibility 20 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate



West of Eden (Similan Islands)

Tuesday

This dive site is ideal for a reef dive. The reef slope ranges from 5 to 40 metres. In the north, there is a cluster of staghorn corals and blue corals punctuated by sparse rocks. In the middle of the site, you will find few corals, mostly sand and scattered fire coral. The highlight of the site is a pinnacle, which is covered with colourful soft corals and sea fans, a magnificent sight that shows the diversity and beauty of the marine life in the reef. In addition, in the shallow parts, you will find a huge plain of small grass-like soft corals on the sand that create a very pretty picture that looks similar to an underwater Japanese garden!

On the outer sand area, there is a good chance to see sharks incl. black tip and white tip sharks, just lying on the sand. You may also have the opportunity to see a lobster hiding in a crevice. Along the reef, you will find a variety of small creatures, general reef fish or turtles.

Type of Dive Boulder/Wall
Depth 12 - 35 metres
Visibility 15 - 30 metres
Temperature 27 - 29 degrees C
Difficulty Beginner to Intermediate

Hideaway Bay (Similans)

Tuesday

The Hide Away Bay dive site is located a bit further South West of Anita’s reef. It is sometimes called Barracuda Point. This shallow bay features superb coral and great marine life. Go deeper and you’ll find granite boulders covered with coral well worth exploring. This and easy dive site perfect for all level of divers. This makes a great spot for snorkelling and night diving. Be careful of the stones fishes and scorpion fishes when swimming there. You can see reef sharks, turtles, and groupers as well as the usual reef life of the Andaman Sea. The current is usually gentle, so enjoy this relaxing dive in the Similans!

Type of Dive Sand,Reef,Rocks, Tuna Wreck
Depth 10 - 30 metres
Visibility 10 - 15 metres
Temperature 20 - 25 degrees C
Difficulty Beginner / Students/ Intermediate

Koh Bon Ridge

Wednesday and Sunday

Koh Bon is located about 20km north of Similan Island #9 and features one of the only vertical walls in Thailand. The main dive site is on the southwestern point and has a step-down ridge that carries on to depths of over 45m. The eastern side of this ridge forms the wall and this is where most divers will enter the water and generally where the boats moor. The western side of the ridge is more of a gentle slope with coral bommies forming mushroom-like formations out of the finger corals. On the ridge itself, seafans of different sizes, shapes and colors grow, and schooling fish swim in the current feeding. This is generally where most divers will sit most of the dive, hoping for a sighting of the manta rays which frequent this dive site. These creatures seem to travel from Bon to Tachai and back again during the diving season from October until May.

Type of Dive Wall/Slope/Reef/Drift
Depth 10 - 40 metres
Visibility 10 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate to Advanced

Koh Bon Pinnacle

Wednesday and Sunday

There is a pinnacle in the bay just to the north of the ridge. It's a deep rock, but if you're an experienced diver it's worth the short bottom times you'll get as it's a very special site. Not all boats visit it and if conditions are not good (like the current is running strong), it's not worth the effort. But, if the water is clear, you're good with your air, and the current is slack, it's a stunning rock. It looks like a monolithic temple built by some ancient culture.

The rock runs along an almost east to west course, the taller of the two pinnacles comes up to about 18metres and the other pinnacle comes only up to about 24metres. The sandy areas around the rock are well over 45metres so beyond the range of most scuba divers. However, when the visibility is good you see all the way around the rock. Leopard sharks hang here, but it's also a good place to see smaller critters hiding in the rock. It's not dived as much as the ridge since it's deeper and the currents can make it more difficult so beginners have a tough time here. The pinnacle is fairly close to the main ridge and it's possible to swim to the ridge, though there is little reason to do so.

Type of Dive Wall/Slope/Reef/Drift
Depth 10 - 40 metres
Visibility 10 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate to Advanced

Koh Tachai Pinnacle

Wednesday and Sunday

Twenty-five kilometers north of Koh Bon, Koh Tachai has an offshore underwater ridge that runs perpendicular to the island. Known as "Twin Peaks" this is considered to be one of the finest dives in the Kingdom of Thailand and is famous as a place to see not only the more common species of corals, fans and tropical fish, but larger animals such as rays, leopard sharks, nurse sharks and hawksbill turtles. Whale sharks and Manta rays make an appearance on a regular basis.

A ridge runs between the two pinnacles, though the southern rock is the one most people dive on as there are two boat moorings there which makes it easier for divers to descend in a strong current. If you have the air and the current is not too strong, it's worthwhile swimming to the other rock which comes up a bit shallower. However, most of the time the current runs perpendicular to the ridge making a long swim tiring. It's heaven for the fish, though; they hunt and dart around, coming very close to divers, making the diving here about as exiting as it gets here in Thailand.

Type of Dive Boulder
Depth 12 - 40 metres
Visibility 10 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate to Advanced

Stonehenge

Thursday

Stonehenge dive site in the Similan Islands features fantastic marine life. You can spot Whitetip, Blacktip and Leopard Sharks. It is also quite common to find lobsters and sea slugs in the cracks. Rays are often there too. Pelagic fishes can be spotted with Barracudas and Giant trevallies. Macro lovers can look for the very rare Ornate Ghost Pipefish! This spot is reserved to Advanced divers.

The Rocks start around 24 meters deep and go down to 36 meters deep. The current can sometimes be quite strong so always check before jumping in the water. The site is situated in the open Sea between the islands of Ko Miang and Ko Payu.

Stonehenge is classified as a Deep dive. This location is a Reef. This is great place for spotting and diving with Sharks!

Type of Dive Reef
Depth 15 - 35 metres
Visibility 15 - 20 metres
Temperature 20 - 25 degrees C
Difficulty Advanced / Deep

Anita's Reef (Similan Islands)

Thursday

The reef spreads across two islands. The reef slop falls from the reef flat at 5 to 10 metres to the sand bottom at a maximum of 26 to 28 metres. Shallow coral gardens comprise huge pore and staghorn corals with small pinnacles. Colourful corals are scattered along white powdery sand, creating beautiful natural scenery. A big outcrop makes this dive site unique and attracts many photographers. This fantastic rock at 12 metres is surrounded by various colourful soft corals, gigantic sea fans and many species of hard corals. It really is a must-see. At the south side of Anita’s reef are gigantic boulders lie at 30 to 35 metres on a sand bottom and have formed a channel that divers can swim through and luckily can see sharks and big Kuhl’s stingrays.

This is a perfect site for searching for small creatures such as black-ray partner gobies, razor wrasse, rockmover wrasse. In addition angelfish, dragonets, pipefish, scorpionfish and varieties of colourful nudibranchs are commonly seen on the rocky reef. Furthermore clown triggerfish, octopuses and seasnakes have bee spotted.

Type of Dive Reef/Sand/Boulder/Wreck
Depth 5 - 40 metres
Visibility 20 - 40 metres
Temperature 27 - 29 degrees C
Difficulty Beginner to Intermediate



Deep Six

Friday

Deep Six is a V-shaped like extension from the mainland continuing north underwater and consists of small as well as huge rocks and boulders covered with soft coral and sea fans. Situated on the north tip of Island 7 (Koh Pa-Yu), Deep Six‘s depth ranging from 5 - 40 meters and is one of the best boulder sites in the Similan Islands. It’s an exciting deep dive site on the Similans and it was named after Island 6 before the islands were renamed (Elephant Head Rock lost its status as an island), hence the name Deep Six. At the biggest boulder in the centre, a pile of smaller rocks forms exciting swim-throughs, caverns and tunnels that rise from about 22 meters to about 12 meters.

Currents are moderate to strong, particularly at the northern pointed end of the reef. Depending on current direction, descend on either northeast (when north current) or northwest side (when south current) of the island and follow current around the tip and cross to the shallow coral area. The mooring line is a little west of the centre and will help you to get down easily without drifting away from the boulders. It is best to start deep, so you can use the current to ascend slowly upward, passing as many swim-throughs as possible. Most of them are at 12 – 18 meters depth. Because of dive profiles and currents, it is advised to stay close to the rocks since Deep Six is a more demanding dive site.

Type of Dive Boulder, Reef, Sand
Depth 15 - 30 metres
Visibility 15 - 20 metres
Temperature 20 - 25 degrees C
Difficulty Beginner / Intermediate



Turtle Rock (Similan Islands)

Saturday

The site’s landmark is a rock shaped like a turtle. Turtle Rock consists of stacked rocks and staghorn corals stretching along the edge of the island. The sand bottom is at 25 metres. North of the rocky area is a shallow part that is 8 to 10 metres in depth. There is also a swim-through.

On the sandy bottom, Kuhl’s stingrays and garden eels are a common sight. Nestled within the crevices of the rocks, you are likely to find several kinds of sweetlips, snappers, groupers, angelfish and moray eels. Also, various small creatures like nudibranchs and squat lobsters. Sea turtles are often seen here too.

Type of Dive Reef, Sand, Rocks
Depth 10 - 30 metres
Visibility 10 - 30 metres
Temperature 27 - 29 degrees C
Difficulty Beginner / Intermediate



Beacon Reef (Similan Islands)

Saturday

...features a steep dropoff from a depth of 5 metres to a sandy bottom around 40 metres, with a striking diversity of hard corals. The dropoff has a great variety of healthy hard corals, staghorn corals, brain corals, pore corals, bottlebrush corals and many more. A landmark of this site is a shipwreck, known as “Atlantis X”. The ship sank in 2002 and fortunately there were no fatalities from the incident. The wreck lies on the reef slope at a depth of 30 metres at the stern and 15 metres at the bow.

Due to the lush corals, reef fish such as angelfish, butterflyfish, fairy basslets, pufferfish, porcupinefish, triggerfish and moray eels are abundant here.

Type of Dive Reef, Sand, Rocks
Depth 10 - 30 metres
Visibility 10 - 30 metres
Temperature 27 - 29 degrees C
Difficulty Beginner / Intermediate



Richelieu Rock

Tuesday, Thursday and Saturday
by speed boat!

Richelieu Rock is Thailand’s premier dive site and one of the best places in Thailand to see Big Pelagics, macro treats and incredible corals all at one site. This huge pinnacle climbing from the depths of the Andaman Sea attracts scuba divers from around the world. The incredible concentration of biodiversity at one single site make Richelieu famous throughout diving circles. Visited by both liveaboards or Speedboats from Khao Lak Tuesday, Thursday and Saturday, Richelieu Rock is not to be missed by any diver in the region.

Located in the middle of the sea, Richelieu Rock provides no shelters for the boats. So there are only a few day trips that visit there and many liveaboards that include this site as part of their routes. As there is no protection descents are usually done right of the back of the boat – not tied up.

You can dive here over and over and see something new. The currents change constantly, and it’s not always an easy dive. But, if you have an experienced dive guide and they give a good detailed briefing, you can learn how to hide from the currents and have a very enjoyable dive.

Type of Dive Boulder/Wall
Depth 5 - 40 metres
Visibility 5 - 25 metres
Temperature 27 - 29 degrees C
Difficulty Intermediate to Advanced