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Deep Cave Dive at Song Hong, Thailand
There’s a certain feeling that arises when tying into the end of a deep cave line. As you are laying new line in virgin cave, there’s this unmistakable burst of adrenaline being injected into your system. You can feel your heartbeat, your synapses sharpen and you can clearly hear every sound, click and hiss the rebreather makes.
This time is no different.
Mike Gadd had a double scooter failure in Song Hong around the 135m mark as the pressure had made the o-rings squeeze the propeller axe to a halt.
I decide to scooter to 120m to save time, drop the scooter, then swim to the last tie off.
It takes me only 8 minutes to arrive at the end of the line at 153m, the same one Pekka and myself laid a good half year ago.
The video showed a drop into a black void. I tie off into the last arrow and start laying out line. The viz isn’t that good, around 20meters as opposed to the 40m in the shallower parts and the drop isn’t that steep. Instead I’m facing a lunar landscape of rocks strewn around on a perfectly polished beach.
I negotiate my way between the rocks whilst tying off every 10m.
After another 8 minutes, the bottom seems to go up again and I decide I’m far enough for now. My double twenty litre stage tanks allow for a 20 minute swim back to the 90m mark. I also carry two 300 bar carbon tanks on my butt d-ring. As they are positively buoyant, they carry a bit of the weight of all the equipment. I make a final tie off at 177M just above a small hole. I cut the line, place an arrow and start swimming back. With one hand freed, I can now turn on my 11000Lumenvideo light to look at the bottom. In the bottom of the landscape I see multiple black holes which are just too small to swim through. The question is, where are these holes going? Is there another passage below this level?
Then in the corner of my eye I see something crawl away. 5m further I see something else and I move closer. A white-pink millipede-like worm crawls over the sandy bottom. It’s about 2 inches long. Yes, it is just a worm, but, in 6 years of diving in song hong, I have never seen any living creature below 25m. Thermoclines and different dissolved gasses make it basically impossible for any creature to sustain life below these levels, except for some bacteria clusters feeding off hydrogen sulphide and Co2…. yet, at these depths, there is this worm having its own empire.
I make my way back past the 150m mark and face a dilemma; both my computers show completely different decompression stops/profiles. My plan correlates most with my old computer, but I don’t want to ‘bend’ my other computer, so I start doing the deep stops. First stop is at 126m… 15 minutes later, I’m still crawling with 3m increments and only just past the 100m mark. My other computer has now added another hour of deco; 6 hours to go. Not good. I won’t be home in time for dinner, so I decide to fall back on my old trusted computer and my plan. 5 minutes later the first computer tells me I’m dead, whereas I see a little smiley face on the older one.
Miscommunication with the support crew means that my back up air supply is not at the 50m mark as discussed. The briefing was too hastily done and I curse myself for not having written it down.
I had a light trimix in my drysuit to keep me a little cool during all the finning at the bottom, but I’m now cooling down rapidly. The air tank also had my isotonic drinking bag on it and I start to get cramp in my right foot. This is mainly because of loss of fluids and salts, but also because of the vasoconstrictive effect high oxygen exposure has on your extremities, limiting blood flow.
As I arrive too late at the rendezvous point, I just catch a glimpse of the safety diver, who quickly signals an ok sign with his torch and disappears. He has been waiting at the 50m mark longer than anticipated because of the extra deco my computer gave.
Finally, at the 20m marker I get my air and my fluids. I feel warm and hydrated within 15 minutes and back on the happy track.
Once at the 12m area, I can offload most tanks on the custom platforms that are cable suspended at 12 and 9m with a habitat/bell at 8m of depth.
After 4 hours I finally reach the habitat. Cameron helps me to get out of my rebreather and into the habitat, where I start breathing pure oxygen. The air in the habitat is being ‘cleaned’ with a custom scrubber and a computer fan powered by a motorbike battery.
I’m out of the water waist up, my pee valve is below the surface and a big catfish keeps me company on the seat next to me, attracted to what comes out of the pee valve. Multivitamins and electrolytes tend to colour urine fluorescent yellow and I wonder if that is it what attracts the catfish. He remains unfazed as I’m being served hot lasagna… I forgot to put a spoon in the bag and try to scoop the lasagne with the lid of the box. Next time Cameron surfaces inside the habitat he pictures a massacre as my face is covered with lasagne and he nearly chokes in his regulator.
After another 2 hours I crawl back into my rebreather and slowly surface. I get a mild pain in my knees when surfacing, something I had as well on the 239m dive after 3 hours in the habitat. I guess my knees should keep moving during deco instead of sitting down to promote the helium getting out of my joints. The pain goes away quickly; I crawl into the truck and fall asleep.
Max depth; 177
Runtime: 366minutes
Number of gasses carried: 7
At this moment, the shape of the main tunnel remains a mystery. Earlier dives revealed another drop below the ‘slope’ that characterises both sides of the tunnel. If so, then the tunnel would have the shape of a ‘keyhole’, with a much deeper bottom. The width measured on a scooter (very inaccurate) is roughly 200m, where the height is approx. 100m. Rather vast.
Welcome to Day 5 of Scubaverse.com’s week-long Christmas Gift Guide!
Struggling to find the perfect gift for that special scuba diver in your life? Read on for Team Scubaverse’s pick of this season’s must-have Christmas gifts.
Every day this week, we are publishing a special Christmas Gift Guide full of different gift ideas that are all ideal for divers, so you’re sure to find something that’s perfect. Take a look at today’s selection below…
SlipIns DiveSkins
Team@slipins.com / www.slipins.com / SlipIns Facebook / SlipIns Instagram / SlipIns Pinterest
DiveSkins are perfect for scuba diving, snorkeling, swimming, paddling, surfing, and all water sports. It shows up beautifully in pictures under water.
This tight-fitting, tailored lycra suit offers maximum comfort. stretchy, breathable, fast-drying fabric with the world’s best sun and stinger protection.
SlipIns are:
*Ultimate 50+ UPF sun protection
*Abrasion protection.
*Quick dry, breathable, soft fabric
*The ultimate stinging critter protection
Save 10% on your order if you mention you saw this ad in Scubaverse in your order note!
SAVE YOUR SKIN…WEAR OUR SKINS
Team@slipins.com / www.slipins.com / SlipIns Facebook / SlipIns Instagram / SlipIns Pinterest
Diving Books from Miflex Hoses
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Diving-Books.html / Miflex Hoses on Facebook
We stock a great range of Diving & Underground book titles, ideal to add to any order or simply buy as a gift for a friend.
Titles we have include:
Shipwrecks of the Dover Straits, Adventures Underground, Pioneers Beneath the Peak, Dive Truk Lagoon, Underwater Potholer, Images Below & many more.
From Authors including:
Stefan Panis, Martyn Farr, Duncan Price, Ron Young, Rod Macdonald, Chris Howes
Visit our website for more details.
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Diving-Books.html / Miflex Hoses on Facebook
OrcaTorch D710 Dive Light – now available in pink!
sales@sea-sea.com / www.orcatorch.com / OrcaTorch on Facebook / OrcaTorch on X / OrcaTorch on YouTube
Already available in Black, Green, Red and Blue, the D710 Dive Light from Orcatorch is now available in Pink too.
Whether you’re a recreational or a professional diver, you’ll find the OrcaTorch D710 dive light useful in your underwater activities.
With max 3,000 lumens, the D710 is one of the strongest torches in its class. You also have plenty of brightness settings to choose from if you prefer less power.
It runs on one OrcaTorch 21700 5000mAh rechargeable battery with a Type-C charging port, easier for you to charge it anywhere. Now it offers five exterior colour options: Black, Green, Red, Blue, and Pink, to satisfy your diverse needs.
Featuring:
* Uses Luminous LED, max 3000 lumens
* Uses 1 * 21700 Li-ion battery
* 6° beam angle
* Offers four exterior colour options: Black, Red, Green and Blue
* Easy operation with side titanium alloy push-button switch
* Safe lock function, prevents mis-operation
* Intelligent Over-Heat protection
* Battery indicator
* Water pressure resistant construction, depth rated to 150 meters
* Reverse polarity protection, to protect from improper battery installation
* Over-discharge protection function
* Constructed from high-strength A6061-T6 aluminum
* Mil-Spec Type III hard anodized finish for durability and corrosion resistance
* Two sides coated toughened glass with high water pressure resistance under deep water
Sea & Sea is the home of OrcaTorch and other leading diving brands in the UK.
sales@sea-sea.com / www.orcatorch.com / OrcaTorch on Facebook / OrcaTorch on X / OrcaTorch on YouTube
Scubapro Luna 2 AI Dive Computer
Scubapro Europe Website / Scubapro USA Website / Scubapro on Facebook / Scubapro on Instagram / Scubapro on YouTube
SCUBAPRO, the world’s premier manufacturer of high-quality scuba diving equipment, introduces its second generation Luna 2.0, an easy-to-read, intuitive dive computer loaded with easy-to-use features and available in two versions, the Luna 2.0 and Luna 2.0 AI with wireless air integration.
Designed for new and casual recreational divers, the low-profile Luna 2.0 sits comfortably on the wrist. Its oil-filled plastic housing helps ensure reliable performance to depths of 120 meters. A large widescreen display features a high-contrast black and white matrix-segment LCD with full-sized characters for easy reading in all dive conditions. An intuitive menu and simple two-button interface lets the diver navigate the system with ease, aided by clearly marked screen prompts. The LUNA 2.0 offers two algorithms – Predictive Multi-Gas Bühlmann ZH-L16 ADT MB PMG or ZH-L16 + GF PURE, plus 21-50% nitrox compatibility and three selectable gasses for open circuit diving. Three dive modes are available – Scuba, Apnea and Gauge – to suit a range of diving activities.
The Luna 2.0 AI (air integrated) offers the same easy-to-use features and functions as the standard Luna 2.0 plus adds wireless air integration. This not only enables to easily monitor ythe tank pressure, it also provides true remaining bottom time (RBT) and allows the air consumption to be factored into the decompression calculation. Also available with the Luna 2.0 AI is an optional integrated heart rate monitor that lets visually track the heart rate and skin temperature to help staying in the personal target zone.
Both Luna 2.0 models include personalized dive management functions like PDIS (Profile Dependent Intermediate Stops) which calculates an intermediate stop based on N2 loading, current and previous dives and breathing mixes, and Microbubble levels that give the option to adjust the level of conservatism in the algorithm to match the individual experience level, age and physical conditioning for a more enjoyable dive.
The soft silicone arm strap offers a comfortable fit on the wrist, plus bungee mounts on the corners of the housing allow for alternate attachment methods. A Bluetooth Low Energy interface enables the download of the dive data to any iOS or Android device or PC/Mac (firmware can be user-updated), and the CR2450 battery is rated for up to two years or 300 dives.
Scubapro Europe Website / Scubapro USA Website / Scubapro on Facebook / Scubapro on Instagram / Scubapro on YouTube
35% off Red Sea Liveaboard Scuba Scene in Spring 2025
info@oysterdiving.com / www.oysterdiving.com / Oyster Diving Facebook / Oyster Diving Instagram
Embark on the ultimate diving adventure aboard the Scuba Scene, the luxury liveaboard offering an unforgettable Red Sea experience. Known for its exceptional service, safety, comfort, and world-class dive sites, Scuba Scene is the ideal choice for divers of all levels.
Dive into crystal-clear waters teeming with vibrant coral reefs, exotic marine life, and awe-inspiring shipwrecks. From the stunning Ras Mohammed National Park to the famous Thistlegorm wreck, Scuba Scene brings you to the heart of the Red Sea’s best sites. With spacious cabins, gourmet dining, and a dedicated crew that ensures every detail is perfect, this liveaboard guarantees relaxation and adventure in equal measure.
Now is the perfect time to book! Save a massive 35% on any sailing between 3rd March and 28th April 2025. Whether you’re a seasoned diver or taking your first plunge, Scuba Scene promises an experience you’ll cherish forever.
Don’t miss this chance to dive the Red Sea in style and at an incredible price. Book your adventure today!
Tel: 0800 699 0243
info@oysterdiving.com / www.oysterdiving.com / Oyster Diving Facebook / Oyster Diving Instagram
Welcome to Day 4 of Scubaverse.com’s week-long Christmas Gift Guide!
Struggling to find the perfect gift for that special scuba diver in your life? Read on for Team Scubaverse’s pick of this season’s must-have Christmas gifts.
Every day this week, we are publishing a special Christmas Gift Guide full of different gift ideas that are all ideal for divers, so you’re sure to find something that’s perfect. Take a look at today’s selection below…
Thalassas Ocean-Inspired Apparel
support@thalassas.com / www.thalassas.com / Thalassas Facebook / Thalassas Instagram / Thalassas tiktok
Dive into comfort and style with Thalassas! Featuring T-shirts, hats, leggings and more, each piece is designed to bring the tranquillity and beauty of the sea to your everyday life. Whether you’re lounging by the coast or exploring city streets, our gear has you covered.
Your purchase has a purpose! A portion of every sale supports beach cleanup initiatives and organizations.
HOLIDAY BUNDLE PRICING STARTS NOVEMBER 18th!
This holiday season, we’re offering bundle discounts on our best-selling tees, hats, and leggings! Mix and match to create your perfect set – and enjoy savings when you buy more. It’s the perfect time to stock up on ocean vibes for yourself or the diver in your life.
🌊 Holiday Bundle Discounts: Save More When You Buy More! 🌊
Don’t miss out, these deals won’t last long! FREE SHIPPING on all orders in the USA.
support@thalassas.com / www.thalassas.com / Thalassas Facebook / Thalassas Instagram / Thalassas tiktok
XDEEP Navy Signature Hoodie
info@nautilus.uk / XDEEP on nautilus.uk / www.xdeep.eu / XDEEP on Facebook
The long-awaited XDEEP Signature hoodie is finally available! Apart from being super-trendy, it’s also quality stuff: made in EU of 100% premium cotton with solid japan-made YKK metal zippers.
The main features of this stylish hoodie are the following:
– 100% cotton
– Strong metal zipper
– High-quality print
– Made in EU
Furthermore, all XDEEP hoodies and t-shirts (including fabric) are manufactured in EU using top quality 100% cotton.
The XDEEP Signature Hoodie is perfect for keeping warm and looking trendy at the same time.
To find out more about XDEEP products, visit www.xdeep.eu.
Nautilus are the distributor for XDEEP and other leading dive equipment brands in the UK. Find out more about Nautilus brands at nautilus.uk/our-brands.
info@nautilus.uk / Buy in the UK / www.xdeep.eu / XDEEP on Facebook
Oceanarium Regulator Bags & Octo Holders
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Oceanarium.html / Miflex Hoses on Facebook
Oceanarium products offer great gifts for all lovers of life underwater, including unique designs of regulator bags, octopus holders, gear tags & cloak towels.
This range brings fun & enjoyment to your dive making your kit distinctive.
Check out the very popular regulator bags available in 6 designs, including the Oceanarium Whaleshark design, as well as the two new designs of Octopus Holders; Pygmy Seahorse & Jellyfish.
Buy a Christmas gift for a friend and make them smile… Diving is Fun!
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Oceanarium.html / Miflex Hoses on Facebook
Fourth Element Pelagic Dive Watch
info@fourthelement.com / fourthelement.com / Fourth Element Facebook / Fourth Element Instagram / Fourth Element tiktok / Fourth Element YouTube
The Pelagic dive watch from fourth element combines British design with Swiss-craftmanship in a hand-built automatic watch which captures the essence of classic scuba-diving timepieces.
Named after the vast reaches of the open ocean, the Pelagic combines exceptional craftmanship with high-specification engineering. Designed in the UK and hand-built in Switzerland, it is rated to a depth of 500m. The Pelagic features a stunning automatic movement, seen through the sapphire crystal glass case back, powered by a Swiss made precision self-winding movement. This is a watch suitable for the most extreme environments on Planet Earth.
The Pelagic has a brushed stainless-steel case with the choice of 22mm silicone/rubber strap or stainless-steel bracelet. It features a helium escape valve, positioned at 9 o’clock ensuring that this watch is even equipped for saturation diving. The watch features a unidirectional black ceramic bezel, allowing maximum dive times to be planned, luminous hands and markers and date function.
Design detailing includes ‘fourth element’ engraved on the rotor, buckle (on the silicon/rubber strap version) or clasp (on the brushed stainless-steel version). The crown features the fourth element icon representing the four elements earth, air fire and water.
The Pelagic watch is packaged using only recycled materials (recycled PET) and FSC certified paper and card, demonstrating fourth element’s continued commitment to its OceanPositive mission.
TECHNICAL SPECIFICATION
– Movement: 26 Jewel Swiss Sellita SW200 automatic with hacking function
– Water resistance: 500m / 1640ft
– Helium escape valve: 9 o’clock
– Crown: screw down locking
– Case width: 44mm
– Case thickness: 14mm
– Shatter and scratch resistant sapphire crystal
– Lug to lug: 52mm
– Case material: 316l brushed stainless steel
– Bezel: 120-click unidirectional with black ceramic insert
– Swiss Super-LumiNova C3 on markers and hands
– Strap: 22mm silicone/rubber strap or brushed stainless steel bracelet
– Warranty: 2 years
– Swiss made
RRP: GBP £1475 / USD $1975 / EUR €1795 / AUD $2950 / CAD $2595
info@fourthelement.com / fourthelement.com / Fourth Element Facebook / Fourth Element Instagram / Fourth Element tiktok / Fourth Element YouTube
Nautilus Seascape Mask & Clamshell Case
info@nautilus.uk / nautilus.uk / Seascape Mask on nautilus.uk / Nautilus on Facebook
The Nautilus Seascape single lens mask builds on the experience of proven design with the latest technology.
The ultra soft liquid silicone skirt and strap ensure this frameless mask gives the best fit whilst ensuring a wide 120 degree field of vision.
The antislip buckles means the strap stays where set it and the ultra clear, high vision tempered glass means virtually all light passes through to your eyes.
A substantial nose pocket means that equalising is a joy and that, combined with comfort, makes this the ideal mask for most divers.
To find your nearest Nautilus dealer, click here.
info@nautilus.uk / nautilus.uk / Seascape Mask on nautilus.uk / Nautilus on Facebook
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