Similan Islands
Ask anyone who knows about the region and the first place they will mention is the Similan Islands. This small collection of islands set in the beautiful Andaman Sea are the jewel in the Thailand diving crown. Topography ranges from stunning rock formations and beautiful age-old gorgonian sea fans to colourful corals brimming with exotic marine life.
Show moreWorld class dive sites pepper the area such as
West of Six and
Elephant Head Rock which are among the finest in the country and as good as anywhere in the Andaman Sea. One of the best features of diving in the Similan Islands is its 2 distinct types of dive site - deep water boulder formations and pretty coral gardens. Creatures often sighted in the Similans region include leopard sharks, blacktips, whitetips, barracuda, turtles, batfish and triggerfish. Smaller critters also abound such as frogfish, ribbon eels and razorfish.
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Similan Islands]
Hin Daeng / Hin Muang
These 2 pinnacles away from the Thai mainland are perhaps the best Thailand dive sites outside of the Similans. Manta rays, whale sharks and a variety of other sharks make frequent visits to these 2 spots where the diversity and sheer numbers of fish can be breathtaking. Short liveaboards trips that go here can give you a glimpse into some of Thailand's finest underwater treasures. It is also possible to find Similan itineraries that include these sites in their route. These sites are famed for the large pelagics attracted by the current which can be quite strong especially around Hin Muang, so diving here can be a fun ride.
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Hin Daeng / Hin Muang]
Richelieu Rock
This pinnacle is one of Thailand's premier and most popular dive sites and attracts scuba divers from all around the world. This large pinnacle rises steeply from a depth of 35m and is visited by liveaboards from Phuket and Khao Lak that usually dive it several times per trip. Here you can expect to see schools of trevally, grouper and snappers as well as barracuda. If you are in luck you may even spot a manta ray or whale shark. The colourful soft corals, sea fans, small caves and vast array of fish and macro critters all add to the attraction.
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Richelieu Rock]
Phuket / Phi Phi / Krabi
This region among the most popular places on the Andaman coast for those diving in Thailand who wish to be land based. These are great locations if you wish to do diving daytrips or dive courses. You can dive some of the sites that lie between Phuket and Phi Phi from all 3 locations, such as
Shark Point and
Kingcruiser Wreck.
Show moreIf you are staying in Phuket the most likely dive sites you can visit include
Racha Noi and Racha Yai nearby islands featuring hard coral reefs, good visibility and myriad tropical reef fish.
Anemone Reef is another popular spot near Phuket. Fields of anemones cover large areas of this submerged rock, supporting a huge clownfish population and providing great photo opportunities.
Phi Phi is one of the most photogenic vacation destinations in Thailand. Beautiful bays, beaches and rock formations are matched by some wonderful dive sites. Local sites include
Bida Nai and
Bida Nok, twin sites covered in clams, gorgonian fans and sea whips. Enjoy the swimthroughs and channels and look out for leopard sharks, trevally, sweetlips, trumpetfish, cuttlefish and more.
Krabi is another much loved destination, especially for those seeking to avoid the more crowded areas. From Krabi you can dive local sites featuring beautiful soft corals, a variety of schools of fish, great macro life and larger creatures including leopard sharks and large groupers. For divers based in Ao Nang or Krabi, the Phi Phi dive sites are also within range of a comfortable daytrip.
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Phuket /
Phi Phi /
Krabi]
The Gulf of Thailand
The area is home to 2 well known islands:
Koh Samui,
Koh Tao. The Gulf sites are a great option, particularly for diving in Thailand during March to September when it is low season on the west coast, and places like the Similan Islands are closed. From both islands you can visit one of the Gulf's best dive sites, namely
Sail Rock, a lonely granite pinnacle where the marine life of the area congregates. This includes schools of trevally and reef sharks. However, the chances of encountering a whale shark here are what makes this site famous. Koh Tao also has a number of local dive sites to visit and from Koh Samui you can also dive Chumphon Pinnacle, another excellent site where whale sharks are commonly sighted.