By , 1 April, 2015, No Comment

Here are Davy Jones’ Locker located on the tropical island of Koh Tao we are
fortunate enough to have a vast array of dive sites to meet each
individual’s level of diving experience, allowing every diver (beginner or
not) to enjoy the wide variety of marine life here in the gulf of Thailand.
One of my favourites being the barracuda…

The barracuda is a ray finned fish known for its size and fearsome
appearance. Its body is long, compressed and covered with small, smooth
scales. They are mainly found near the top of the water and near coral
reefs. Their bodies are elongated and slender, perfect for sneaking through
the reefs when hunting. They have large mouths and a pair of powerful jaws.
The lower jaw juts out slightly and they have unequally sized fang-like
teeth. Other distinguishing features are the 2 separated dorsal fins and a
forked tail fin which makes them fast swimmers. Barracuda do not have
eyelids so if you see one moving very slowly, it is possible that it is
actually asleep.

In terms of coloration, barracudas are normally grey or silver on top fading
into white on the belly with whitish tips on their dark violet caudal fins.
Their size varies depending on species.

Generally, adult barracudas are considered to be solitary when it comes to
hunting. Most young barracudas tend to gather in large schools, sometimes in
numbers up to hundreds or even thousands. Schooling offers the young fish
protection from predators on the basis of safety in number. Often, when a
predator attacks a school, the school will form a confusing tornado,
preventing any one barracuda being fixed upon as prey in the eyes of the

Barracudas are ferocious, opportunistic predators, relying on surprise and
short bursts of speed (over 40 km/h) to overtake their prey and they
primarily feed on fish (which may include some as large as themselves). They
can kill and consume larger prey by tearing chunks of flesh from them.

Worldwide, there are 26 species of barracuda. It is normal for scuba divers
to come across more than 1 species at certain dive sites. Two of the species
you may come across when you dive here on Koh Tao is the chevron and the
great barracuda.

At some of our premier dive sites you have a very good chance of being in
the middle of a swirling vortex of barracuda, definitely a highlight of your
dive. This is for some, one of their most memorable diving experiences.

During the breeding season (April to September) the females spawn a few
times, releasing about 5,000 – 300,000 eggs each time. Like most fish,
barracudas leave fertilised eggs floating in the open waters until they
hatch. Soon after hatching, barracuda larvae settle in shallow estuaries
where vegetation offers both protection and food to the larvae for around 1
year until they grow into juveniles. Upon entering adulthood, they move to
deeper waters in areas with reefs and remain there for the rest of their

Unlike males that mature sexually within the first 3 years of their lives,
females take about 4 years. It is not possible to visually differentiate
between the genders of this fish.

So there we have one of the many interesting fish that we are lucky to share
the waters with here on Koh Tao. Hopefully you all get to enjoy the
mesmerising experience of the swirling vortex of barracuda when you come
dive with us at Davy Jones’ Locker.

by Sarah



Barracudas tend to gather in large schools, sometimes in numbers up to hundreds or even thousands.









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His Thai Majesty Ship

By , 30 March, 2015, No Comment

The HTMS (His Thai Majesty Ship) Sattakut has everything; history; eerie-ness; marine life in abundance; penetration points with natural daylight; penetration points with no natural daylight; depths up to 30 metres and correct punctuation from us here at Davy Jones Locker.

It was originally a landing craft infantry vessel commissioned by the US Navy in 1944, and was involved in three battles in World War II; the liberation of the Pilau Islands, the battle of Okinawa, and the battle of Iwo Jima.

In 1946 the US Navy decommissioned it, and it was purchase by the Royal Thai Navy. It lived out its service as a patrol boat, until they decommissioned it in 2011. Shortly thereafter, the Thai Department of Marine and Coastal Resources (DMCR) purchased the ship with the intention of donating it to Koh Tao to act as an artificial reef, in order to promote tourism. The vessel was stripped of it’s engines, furniture, electric cabling and thankfully it’s ammunition! After being cleaned and sent to Koh Tao, it was sunk on the 18th June 2011.

Unfortunately because a storm came in as it was being sunk, it ended up on its side in the middle of a channel; hardly an ideal location. So in July a salvage team was brought in to right the vessel and move it to a more suitable location.

It currently sits upright in around 30 metres of water, with the bow facing roughly North. The location is perfect, as it sits around 10 metres to the South of a dive site called Hin Pee Wee. This has obviously helped to bring marine life to the wreck, which is evident today- all over it! There is currently a huge Jenkins whip ray that lives underneath the hull. There are huge spotted snapper and giant groupers sheltering from the current near the conning tower, and if you have good eyes you will be able to find some Jan’s pipefish in the rusting railings. Moray eels also like to find places to sit and watch the underwater world go by. For those that want to venture inside, apart from disturbing a number of giant groupers from their hiding places, you will see lots and lots of shrimp.

The vessel is perfect for conducting technical training dives on which we provide here at Davy Jones Locker. There are many places on the main deck to practice reeling skills and teach communication in simulated no-visibility. Plus, there are numerous places to penetrate the wreck, and they vary greatly in terms of how quickly and how badly they silt out, so practising exits in zero visibility can be made progressively more challenging. The wreck is also a great place to conduct decompression procedures training dives, as there are plenty of reference points to use when ascending to meet run times, undertaking deep stops, and gas switching.

But it’s not all about training. Let’s not forget that this wreck has an amazing history, and sometimes it’s just great to go for a long deco fun dive around it, or a penetration fun dive inside it! The ship is the closest dive site to Davy Jones Locker on Sairee beach, and we use it a lot!

by James



We are lucky one to have such as amazing wreck around Koh Tao!!!







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Le Sidemount vous y viendrez!

By , 28 March, 2015, No Comment

Le Sidemount c’est quoi???

Pour la plongée Tek ou loisir, pour la plongée spéléo ou sans plafond, pour les pros?

NON! Le sidemount est simplement une autre manière de plonger…

Imaginé à l’origine par les plongeurs spéléos, la configuration sidemount est devenue très populaire auprès d’un grand nombre de plongeur et on la voit de plus en plus en plongée loisir.

Le principe est simple: plus de bouteilles sur le dos et celles ci seront portées sur les côtés du corps.

Cette configuration offre de nombreux avantages:

  • possibilité de plonger avec une ou plusieurs bouteilles ce qui augmentera sensiblement votre autonomie et votre sécurité.
  • un meilleur hydrodynamisme et un encombrement réduit ce qui augmentera votre potentiel d’exploration et de pénétration en plongée souterraine ou sur épaves.
  • un meilleur confort pour le dos
  • matériel minimaliste et léger qui séduiront les voyageurs!!!!


Ici à Davy Jones Locker nous offrons différentes formations pour la plongée sidemount. En plongée loisir la formation PADI vous permettra de vous familiariser à la plongée “Sidemount” lors de vos plongées récréatives avec l’utilisation d’un ou deux cylindres. Les formations PADI TecRec ou TDI s’adresse plutôt aux plongeurs techniques ou à ceux voulant le devenir.

Pour plus d’informations sur nos cursus sidemount visitez notre site www.techdivingthailand.com


Alors envie d’oublier vos bouteilles, plonger avec une sensation de liberté totale?

rejoingnez nous vite…

by Robert

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Tec 45

By , 26 March, 2015, No Comment

I completed my training of the Padi Tec 45. It was a very informative course and a lot of fun. Firstly you go into the pool to complete some confined training, mastering buoyancy and practising skills needed when diving deep. S-drill, valve drills and all the skills we complete are all done neutrally buoyant. Then we had to plan our dives taking into consideration all of your decompression stops. We planned to dive on the Unicorn wreck, just north of Mango Bay on the north side of Koh Tao. Our dive was to 45 metres and we spent 25 mins trying to navigate our way around the wreck.

The visibility was not great the day we dived but we still managed to have a great day and completed our decompression stops successfully. It took nearly 35 mins to get back to the surface. We also switched gases at 21m to Nitrox 50%, to make our dive more conservative. I highly recommend contacting DJL tech department to do some technical training with Instructor David Polley. I had a lot of fun on this course and it will enhance your diving ability and understanding of decompression theory.

by Ollie



Technical dive on the Unicorn Wreck


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Thailand, Koh Tao – Davy Jones Locker !

By , 21 March, 2015, No Comment

Paradis ø’en med dykning i fokus, Koh Tao har formået at blive Thailands dykker mekka, her hos Davy Jones Locker finder man alt fra nybegynder til instruktør uddannelser samt tek dykning.
– Deres MSDT ( Master Scuba Diver Trainer ) uddannelse har formået at give mig det man ikke fik med på sin Instruktør uddannelse, man får den sidste selvtillid til rigtigt at komme ud og have sine egne elever.

Fed oplevelse og det hele værd !











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