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Similan Islands
Koh Bon and Koh Tachai
Surin Islands
Burma Banks
Manta Ray and Whale Shark Safaris

Similan Day Trips: 2 Dives from $159 US

Liveaboard Prices: From $169 US per day



Thailand Dive Sites









Similan Islands

There are no words that can adequately describe diving in the Similan Islands except to say, "This is world class diving at its very best!" What truly distinguishes this pristine marine national park from other diving destinations is the tremendous variety of underwater terrain and the choices in diving it provides.
Dive sites on the eastern side of the islands are characterized by an almost overwhelming symphony of color. Its like being part of a Monet landscape. Imagine white sand slopes, brilliantly colored corals, and crystal clear waters combined with an explosion of tropical fish and you should have the picture. This is a macro photographers dream world.

West facing dive sites are dramatically different than those on the east side of the islands, and will certainly provide excitement for the more adventurous diver. Massive granite boulders, covered with hard and soft corals litter the white sandy bottom. Many of these monoliths plummet well beyond recreational diving limits. These dives are certainly deep and not for the faint of heart. Currents here are much stronger as well, providing an ample supply of food for the larger pelagics such as giant mantas and the elusive whaleshark. Keep your eyes open for the big stuff!
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Rocky Point

Depth: 18-40 meters (60-130 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #1, South Tip
Similan Dive Sites
     
Lying just off the south tip of island #1, granite boulders lie in piles from the surface to 40 meters and beyond; providing a wealth of archways, caves and ledges. Hard corals and feather stars abound in the shallower areas, while soft corals and massive sea fans inhabit the deeper reaches. At depths of 20-40 meters divers often encounter large blue spotted stingrays and docile leopard sharks resting on the sandy bottom. Tuna, giant barracuda, surgeonfish, snapper and large groupers are always patrolling the blue.
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Shark Fin Reef

Depth: 9-40 meters (30-130 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #3, Southeast
Similan Island Dive Sites
     
Situated just southeast of island #3, Shark Fin reef is a narrow ridge of granite which is partially exposed at low tide. The diving here is excellent as it combines both east side and west side characteristics. While the seascape here is dominated by gigantic granite boulders, there are also large fields of staghorn coral, and a gradual sloping sandy bottom. This site offers outstanding scenery at nearly every depth. At 25-30 meters you can see both Leopard and White Tip Reef Sharks. Huge rock formations create a number of archways and tunnels at this depth. Keep your eyes open for large napoleon wrasse patrolling the area, as well as the occasional Whale Shark and Manta Ray.
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Stonehenge

Depth: 18-37 meters (60-130 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #4, North Tip
Mergui Archipelago
     
As the name implies, this site features a number of huge massive boulders scattered over the white sandy bottom. Several of these rocks are so gigantic they resemble small apartment buildings as they rise 10 meters or more from the bottom. Other points of interest include huge barrel sponges and fan corals that grow in the canyons between the large granite boulders. Above 25 meters, the boulders are covered with hard coral as well as variously colored feather stars and sponges. This is also one of the few places in the Similans where colonies of lobster can be seen. Fish life here is also quite varied and can include large unicorn surgeonfish, big schools of jacks, snappers and tuna. A relatively deep dive, the average depth here is about 27-30 meters.
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East Of Eden

Depth: 6-34 meters (20-112 ft.)
Visibility: Excellent
Currents: Moderate
Experience level: Intermediate
Location: Island #7, East Side
Similan Day Trip
     
This spectacular site extends along the eastern shore of Koh Paya for a few hundred meters, offering magnificent coral heads in depths of 9-12 meters. These undersea islands are covered in soft tree corals, sea fans and wire corals, as well as, multitudes of colorful tropical fish. Hard corals extend down the steep slope from less than 10 meters at the top, to over 33 meters where the slope flattens out and smaller coral heads stand covered in sea fans, soft corals and sponges. This site features some of the best coral growths to be found anywhere on the planet. Larger creatures are also seen here on occasion, including big stingrays and even the rare bowmouth guitarfish.
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Deep Six

Depth: 12-40 meters (40-130 ft.)
Visibility: Excellent
Currents: Vigorous to Strong
Experience level: Intermediate to Advanced
Location: Island #7, North Tip
Similan Liveaboard
     
This underwater extension of the islands northern tip consists mainly of large granite boulders sloping down steeply from the surface to 40 meters or more. Perhaps the most distinquishing feature here is the proliferation of gigantic fan corals, most of which grow at depths below 27 meters. Dwarfing the average diver, these filter feeding corals thrive in the often vigorous currents which converge here. Patrolling the reefs deeper edges are White Tip Reef Sharks and the occasional giant Manta Ray. There are some incredible swim throughs at 12-18 meters, that are a must see.
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Elephant Head Rock

Depth: 3-70 meters (10-220 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #8, Southeast Tip
Elephant Head Rock
     
Elephant Head is considered by many to offer the most spectacular diving in the Similans; few who have dived here would disagree. This site is composed of immense granite boulders which are said to resemble the head and back of an elephant, as if seen while swimming. Below the surface, these rocks are stacked up like giant coral covered building blocks. It is huge!

One only needs to look upward to fully appreciate the beauty of the gigantic elephant head. When visibility is good, the view is truely beyond description. As one gazes up at the colossal rock formations, the fish and corals seem to fade into insignificance, as the truely massive scale of the place becomes apparent.

While spectacular scenery and diverse marine life are certainly big attractions at Elephant Head, many divers consider the most outstanding feature to be the intriguing network of archways, swim-throughs and tunnels among the rocks. When the current is running, divers can catch an exciting free ride through these tunnels, using the flow of water to move them along the various passage ways.
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Beacon Point

Depth: 6-37 meters (20-130 ft.)
Visibility: Excellent
Currents: Moderate
Experience level: All Levels
Location: Island #8, South Point
Thailand Liveaboard
     
This east facing reef is a continuation of the magnificent sloping drop off which runs parallel to island #8. A drift dive is often the best way to explore this area. Begin the dive close to the island, dropping down to about 30 meters where you will see some large granite boulders. It is at this point where small reef sharks, Leopard Sharks and Stingrays are patrolling. Beyond the boulders the sandy sea floor meets the fringing reef which is covered in huge gorgonian sea fans and twisted wire corals. Curious moray eels are lurking in the holes and crevices of the isolated patches of hard coral. There is also an abundance of the usual reef fish found throughout the area.
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Fantasea Reef

Depth: 12-40 meters (40-130 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #8, West Side
Similan Island Dive Sites
     
This site is truely incredible and always ranks among the favorites for anyone who has been here. A jumble of massive granite boulders extends, in places, from 9-12 meters beneath the surface to over 30 meters at its base. The sea floor slopes away to more than 40 meters, the maximum recreational diving limit. Immediately upon entering the water divers often find themselves surrounded by a wide variety of colorful reef fish similar to those found around Elephant Head, Stonehenge and Deep Six. This reef is also a natural attraction for semi-pelagic creatures like schools of jacks, mackerel, dog-toothed tuna, sailfish and huge manta rays. This site is a must see. A number of dives are needed to explore the extensive swim-throughs, caves and other features of Fantasea Reef.
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Snapper Alley

Depth: 12-40 meters (40-130 ft.)
Visibility: Good to Excellent
Currents: Moderate to Strong
Experience level: All Levels
Location: Island #9, Southeast
Similans Turtle
     
Actually an underwater extension of the southeast corner of island #9, Snapper alley is composed of a series of huge granite boulders tumbling down a steep, white sand slope. This area recieves excellent tidal exchange, so currents can be quite brisk; accordingly, the soft coral growth here is excellent. It is worth going fairly deep here, 24-30 meters, since this is where the best soft coral colonies are found. And, as the name implies, snapper can indeed be seen here as well, particularly a school of the blue-lined variety which hangs out at the western edge. Other fish species are also plentuful.

A special bonus when diving Snapper Alley is the interesting cavern which exists among the shallow rock formations. A "room" large enough to accommodate two or three divers at a time, this cavern has three different entrances/exits, making it quite safe as overhead environments go. An especially nice feature of this one, is the depth: at 5-7 meters it is a perfect place to spend your safety stop.
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Breakfast Bend

Depth: 12-40 meters (40-130 ft.)
Visibility: Good to Excellent
Currents: Moderate to Strong
Experience level: All Levels
Location: Island #9, Southeast
Hin Daeng
     
Just around the corner from Snapper Alley on the east side of the island, the Hideaway, or Breakfast Bend, is a very pleasant and scenic shallow dive. A combination of mostly hard coral and white sand substrate, the reef here starts with a plateau of patch coral at 5-10 meters deep. From there, fields of staghorn corals and several large "bommies" slope down to a white sand bottom at about 18 meters. An excellent variety of reef fish call this place home, including several brilliant regal angelfish and a surprisingly approachable clown triggerfish.
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Christmas Point

Depth: 18-30 meters (60-100 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Island #9, West Tip
Hin Muang
     
A Classic west side reef, this site lies just west of Koh Ba Ngru (Island #9), and consists of huge piles of boulders, scattered over a fairly large area. Marine life here is diverse and prolific; the rocks are adorned with a "living carpet" of yellow-green sea anemones. Countless fish species are found as well, ranging from tiny gobies and blennies to occasional White Tip Reef Sharks. Among the most notable attractions are two different schools of oriental sweetlips. Whale Sharks and Mantas have also been seen here.

The boulders here have created an extensive series of caverns, swim-throughs and tunnels. Christmas Point is also a perfect multi-level site.

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Koh Bon and Koh Tachai


Koh Bon and Koh Tachai are two tiny islands that lie between the Surins and the Similans. They are almost always included as part of liveaboard cruises from Phuket. Both are tall, rocky islands and offer varied and beautiful underwater scenery.



Koh Bon West Ridge

Depth: 18-40 meters (60-130 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: Northeast of Similan Islands
Manta/Whale Shark Safari Price: From $155 US
Koh Bon
     
This site is found on the under sea extension of the islands west ridge which drops sharply to about 40 meters before the sea floor, slopes away to greater depths. Hard corals extend down to about 25 meters, while giant sea fans are found from 18-40 meters. These sea fans which are pastel in color are perhaps the most beautifully colored of all the sea fan corals found in Thailand. Large barrel sponges also grow along the ridge.

Aside from the astounding reef life, Koh Bon is one of the best places to see big pelagic creatures; both giant Mantas and Whale Sharks are local residents here. Leopard Sharks, Reef Sharks and large Stingrays also make their appearances. When visibility is at its peak, this site is reminiscent of diving inside the grand canyon. The shear magnitude of this place is amazing.

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Koh Tachai

Depth: 12-34 meters (60-120 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: North-Northeast of Similans
Manta/Whale Shark Safari Price: From $155 US
Whaleshark Koh Tachai
     
This site features a pair of coral-encrusted pinnacles, known as the twin peaks; which are connected by a long, rocky ridge. Currents rich in nutrients and plankton flow over the ridge, resulting in outstanding growths of sea fans, whip corals and brilliant soft corals. There is also an overwhelming amount of schooling fish action here which includes giant barracudas, blue-lined snapper and the amazing batfish. The currents here also bring in the big pelagics. One a single dive here last season we encountered a 5 meter manta ray and 5 minutes later a 9 meter whaleshark. It is easy to understand why this site is the favorite of so many divers. You must look into the blue!

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Surin Islands

Only a few miles from the Burmese border these breathtakingly beautiful islands are also part of the Thai National Park system. Heavily forested, their steep rugged landscape is covered with an emerald green carpet of virgin jungle, punctuated by towering ancient hardwoods. The surrounding waters which boast the best developed coral reefs in Thailand are teeming with gamefish such as sailfish and dorado. The reefs here are also the favorite haunt of hawksbill turtles.

The jungles are virtually uninhabited but for two small villages of the Chao Le (sea gypsies). These seafaring people are culturally and ethnically seperate from Thailand. A visit to their villages offers a fascinating glimpse of a unique culture.




Swift Passage

Depth: 12-40 meters (40-130 ft.)
Visibility: Excellent
Currents: Strong to Raging
Experience level: Intermediate to Advanced
Location: South of Koh Surin Tai
Surin Islands
     
One especially exciting Surin area dive is Swift Passage, the narrow pass which separates Koh Surin Tai (the southern of Surin's two main islands) and Koh Torinla, the smaller island just to the south. The passage is aptly named; strong currents of several knots are very common here. When conducted as a drift dive, however, this current is actually a bonus. The cruising diver is able to watch a constant parade of schooling fish like batfish, jacks and mackerels. Blacktip and whitetip reef sharks are also seen here with fair frequency, and there have even been reports of huge bumphead parrotfish residing among the shallow hard coral formations. Hawksbill turtles are also abundant in this area, with up to ten being reported on a single dive.
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Richelieu Rock

Depth: 6-32 meters (20-100 ft.)
Visibility: Poor to Good
Currents: Moderate to Strong
Experience level: Intermediate to Advanced
Location: South of Koh Surin Tai
Richelieu Rock
     
This site is what put the Andaman Sea on the map. Nearly ten miles east of the Surins, this site is widely regarded as world class. The reputation is well deserved, as marine life here compares favorably with the best sites anywhere in the world.

Almost entirely submerged, Richelieu consists of one large rock pinnacle and several smaller ones, sloping steeply up from a surrounding sand bottom at about 33 meters.

Although visibility here is often limited, the abundance and variety of marine life is astounding. Richelieu offers some of the best soft coral growths around, with some trees growing over knee high. Dense colonies of sea anemones cover many of the shallower rock surfaces, providing homes for at least four different species of clownfish. Other invertebrate life includes a wide range of shell fish, a multitude of shrimp, crabs, sea stars and nudibranchs. Lots of big fish including Snapper, Tuna and Surgeonfish frequent the site. Large Stingrays, Shoveled-Nosed Rays, Sand Sharks, Leopard Sharks and the elusive Whale Shark are also commonly sighted here. Encounters with the rare Whale Sharks is an incredible experience and Richelieu is among the best places in the world to see these animals. Remember, even without a Whale Shark encounter, Richelieu still offers a concentration and divesity of marine life found at few other places; it is a sight not to be missed!


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Burma Banks

Over the Andaman Sea horizon, in international waters far beyond the sight of land, lie the exciting and remote reefs of the Burma Banks. These sites are a series of submerged sea mounts lying in open sea, which form coral covered plateaus that come within 15-24 meters of the surface. The plateaus are surrounded by depths of over 300 meters.

Diving at the Burma Banks is always exciting and challenging, but it is not for everyone. This is real ocean diving; just open sea in all directions. Many sites are fairly deep and strong changeable currents are very common. For experienced divers looking for high voltage excitement, big animal encounters and a chance to dive an environment well off the beaten path, the Burma Banks are definitely the destination of choice.



Silvertip Bank

Depth: 17-46 meters (60-140 ft.)
Visibility: Excellent
Currents: Strong
Experience level: Advanced
Location: North of Surin
Burma Dive Sites
     
Shaped like a submerged table top mountain, Silvertip Bank has a flat top at about 17-20 meters beneath the surface. From the top, the bank drops off at about 45° to 45 meters before plunging to 300 meters or more. Within moments of descent to the top of the bank, large silvertip sharks begin to make their appearance, cruising around out in the blue. Nurse sharks are also very common here. Due to the proximity of deep water, this site is an excellent area for pelagic fish such as rainbow runners, bonito and dog-tooth tuna. Large stingrays are also encountered here along with eagle rays and Mantas, as well as game fish such as wahoo, sailfish and marlin. Even ocean sunfish and Whale Sharks have been seen here; this is the kind of place where it is possible to see just about anything!
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Rainbow Reef

Depth: 22-28 meters (60-140 ft.)
Visibility: Excellent
Currents: Moderate to Strong
Experience level: Advanced
Burma Banks
     
This bank covers a large area, averaging 23-28 meters in depths across the top and falling away to more than 300 meters. A fairly even sandy bottom is enlivened with extensive areas of hard coral. The table corals here grow to 5 meters or more and huge apartment size mounds of boulder coral dominate the seascape. Many of the ancient "bommies" are riddled with fissures and crevices, which provide attachment points for several varities of gorgonian fans. You are assured of seeing plenty of sharks on every dive – not only small species such as the nurse shark, but also much larger, oceanic species such as silvertips. Tigersharks are much less common, but there is an abundance of reef and pelagic fish.

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