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The Web's Best Guide to Thai Scuba

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Thailand is considered to be one of the top ten scuba diving countries in the world.
The kingdom boasts crystal clear waters, spectacular reefs and rock formations, plus a colourful selection of marine life.
There can be few countries other than Thailand that offer so much scuba vacation variety, both underwater and on land.
Whether you are a complete novice or a qualified diver Andaman Adventures offer scuba diving holidays and courses throughout Thailand to suit your ability.
With over 2,000km of coastline and hundreds of offshore islands, the variety is phenomenal, encompassing everything from extensive fringing reefs to deep drop-offs and wrecks, dramatic granite walls, caves and tunnels, coral-covered pinnacles, and open ocean seamounts.
Spectacular hard and soft corals abound, and the marine life is prolific, ranging from minute and colourful reef dwellers to manta rays, sharks and pelagic visitors such as giant barracuda, tuna, trevally and the mighty whale shark.
With the Andaman Sea to the west and the Gulf of Thailand to the east, Thailand is unique in that it borders two distinct oceanic zones, each with their own peculiarities and marine life.
Many dive sites all around the coast share common species, but on others the underwater terrain and reef communities show marked differences between the two sides of the peninsula's coastline.

The Andaman Sea has Thailand's best diving. Immaculate visibility and conditions while swimming with manta rays, whale sharks, lion fish, dragon fish and hosts of other fish. Fabulous coral.

We take clients to dive sites off the entire west coast of Thailand, from near the Malaysian border to near the Burmese border. For an unforgettable 2 week scuba diving holiday for the most novice or most experienced diver, we combine different locations and a multitude of dive sites.
Thailand diving, Thailand scuba dive sites Offering scuba diving trips to world-class destinations, Andaman Adventures covers all the best dive sites in Thailand, including the Similan Islands, Koh Phi Phi and the world-famous Hin Deng and Hin Muang, We take care of non-divers as well as beginners and experienced divers, providing alternative activities where needed.
No other company combines these different locations for you, ensuring that you see not just the best scuba diving in one area of the country, but the best scuba diving in the whole of Thailand. Why scuba dive just one bit of Thailand, when with Andaman Adventures you can scuba dive the best sites in the entire country ? Thailand diving, Thailand scuba dive sites


Thailand Scuba Diving Holidays

We at Andaman Adventures offer the following holidays and tours:
(click on a package for more information):

DHL Dive Southern Thailand 12 nights
DTBE Diving - Beginner's Open Water PADI Course 6 nights
DTAN Diving - Mid-Andaman Sites 5 nights
DTLA Diving - Dive Koh Lanta 4 nights

All packages can be customised to fit your requirements, or contact us for a customised itinerary.

Searchable Marine Fish Database

Search Database of Thailand's Marine Fish

Includes Latin and English names for all 1,200 of Thailand's marine fish.

Search tips


Thailand Scuba Diving Destinations

We base our divers at the following 4 destinations, in order to cover all of the dive sites on the Andaman Sea coast:

Ao Nang (Krabi Province) This great all-round destination gives access to all the best sites from Phang Nga bay to Koh Phi Phi
Khao Lak Gateway to the Similans
Koh Lanta From here we dive Koh Haa, and Hin Daeng / Hin Muang
Koh Lipe Thailand's newest dive destination offers uncrowded diving and great corals.


All Thai dive sites

thailand phuket koh samui hin kuak ma koh chang surins koh tao pattaya koh kra khao lak koh phangan similans


Koh Chang
Koh Tao
Koh Phangan
Koh Samui
Surin Islands
Khao Lak
Similan Islands
Krabi & Phi Phi
Koh Lanta



Diving seasons

The weather patterns in the Andaman Sea and in the Gulf of Thailand are dominated by two opposing monsoons, the northeast and southwest monsoons. The northeast monsoon sweeps across the Gulf of Thailand between mid October and mid December, bringing heavy rain and strong winds. Some dive sites become inaccessible during this time as they suffer from strong currents and reduced visibility. It is during this period that many tourists switch, as if by magic, to the west coast.

Those that stay on in the Gulf during this short time will find themselves on nearly empty beaches, with the sun regularly appearing from behind the clouds. An anomaly is that the easternmost diving regions in Trat province remain sheltered during this period.

The Andaman Sea is sheltered from the worst effects of the northeast monsoon, and diving and snorkelling is at its best from November to April. Underwater visibility ranges from 5m to 30m or more during this period. From May to October the southwest monsoon strikes this region, bringing in its wake towering seas, strong currents and increased turbidity.

The Gulf of Thailand dive sites are at their best during this season, with only minimal winds and light showers to disturb the tranquillity of the beaches and seas. Visibility can sometimes equal that of the Andaman Sea during this period. There are always dive sites on either side of the Isthmus that are sheltered enough to be dived whatever the weather so, if you find yourself in the wrong place at the wrong time, don't despair!

The Similans and the Burma Banks are subject to sudden cold currents or thermoclines which can chill the water by up to 10°C and, although these temperature dips are localized, most divers still prefer to don 3-4mm wetsuits for thermal protection.


Dive Companies

There are many top-notch dive centres in both the Andaman Sea and the Gulf of Thailand. PADI and SSI are the main certification agencies, in both recreational and technical diving tuition. There are also a number of BSAC, CMAS and NAUI training facilities along with IANTD, ANDI and TDI for the ‘Techies’. Entry-level courses through to Instructor programmes and specialties like cave diving and underwater photography are widely available.

Most of the larger and better-established dive operators maintain their equipment to high standards, with a good selection of sizes. BCDs, masks, fins, regulator and pressure consoles are obtainable everywhere; however, wetsuits, diving computers and underwater cameras are generally only available at the more established facilities.

Click here for all Thai dive companys' contact details



All liveaboard boats

Click here for all liveaboard boats, with contact details

Renting equipment

When you rent equipment, for your own safety and comfort, you should remember to check the following:

Buoyancy Control Device (BCD)

  • Select the correct size. The last thing you want is a BCD that restricts your breathing because it is too tight. Conversely, if it is too large, you may feel you are about to slip out of it.
  • Select a style or make that you are familiar with and take into consideration belts, buckles and fastenings.
  • Check there are no leaks.
  • Ensure that the low-pressure inflator connector is securely tightened.
  • Ensure that both the deflator and power inflator buttons function correctly and do not stick.
  • Ensure the mask fits correctly and does not leak.
  • Check the skirt for damage or tears.
  • Check the strap for signs of wear and tear. Bear in mind that if you lose the mask you might have to pay for it.
  • Ask for an optical mask if required. Some larger operators carry a wide selection of prescription lenses.
  • Check ease of breathing through both regulators.
  • Ensure regulators mouthpieces are in good condition and that the bite lobes are okay.
  • Purge regulator before putting it in your mouth - in the tropics, you never know what might have crawled inside!
  • Check the pressure gauge; satisfy yourself that it does not stick.

Fins and booties

  • Be careful to get the size right: too small can result in cramp, too large and they may fall off.


E-zine Articles


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Diving with Elephants



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