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Trip Report: South & North Andaman — 19th to 26th November 2025

27/11/2025

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Leopard Shark Thailand Liveaboard
​Our new diving season began with a wonderfully international group joining us at Chok Thaeworn Pier in Phuket. Divers arrived from Switzerland, France, Holland, Belgium, Taiwan, Australia, Saudi Arabia, and Canada — including our special guest and paparazza Katie, already armed with her camera. With everyone settled in aboard the MV Smiling Seahorse, we started our southbound journey toward the crystalline waters of the Koh Lanta National Park and the remote pinnacle of Hin Muang.

Day 1 — Koh Haa & Hin Muang

​Koh Lanta National Park — turquoise lagoons & dramatic limestone formations

Koh Lanta National Park is known for its sheltered lagoons, underwater caverns, and vibrant coral slopes, making it a perfect starting point for our first dives of the season. Our check dive at Koh Haa set the tone, with chromodoris annulata and chromodoris kuniei decorating the reef like tiny jewels. Coral groupers hovered above bommies as juvenile angelfish and juvenile clown triggerfish darted around. Schools of yellowback fusiliers moved in waves alongside snappers and mackerels, while golden trevallies flashed past in hunting formation. A great barracuda cruised by, and a yellow-margin triggerfish paused at a cleaning station surrounded by busy wrasses and partner shrimps. Dusky damselfish, flutemouths and curious butterflyfish added movement and colour to the scene.

We continued south to Hin Muang for a spectacular wide-blue dive blessed with excellent visibility. Schools of batfish followed us down the wall where giant, bluefin and white-tongue trevallies patrolled the deep. Longnose emperors glided over purple-red soft corals, yellow boxfish played hide-and-seek around ledges, and a fimbriated moray eel peeked out from a crack. Rainbow runners flickered past like silver missiles while dogtooth tunas circled in the blue. A wandering octopus inspected our group before disappearing into the reef, and a white bent-stick pipefish blended perfectly with the soft coral background. Wrasses, anthias and red-toothed triggerfish filled every corner of the reef.
​
Our final dives of the day took place at Koh Rok Ridge, where porcupinefish of every pattern — false-eye, blue-spotted, black-spotted and fine-spotted — hovered curiously. Blue-legged boxer shrimps and Durban dancing shrimps were busy in the crevices of the giant barrel sponges, one of which hid a massive giant moray eel. Yellowback fusiliers, yellow-lined snappers and giant trevallies passed in numbers, while anemonefish guarded their shimmering homes and hawkfish perched proudly on coral heads.

The night dive revealed an entirely different world. Giant hermit crabs marched across the sand, cleaning shrimps wiggled within the shadows of barrel sponges and delicate flabellinas crawled over the reef. Big red crabs explored the rocks, bubble corals sheltered tiny squat shrimps, parrotfish slept in their mucus cocoons and several triggerfish wedged themselves safely into cracks. A scribbled filefish drifted slowly through the torch beams while cardinalfish and soldierfish hovered along the walls.
Giant Moray Eel Thailand Liveaboard
Scuba Diver Hovers Over Coral Reef Thailand Liveaboard
colourful reef fish thailand liveaboard
Soft Corals Thailand Liveaboard

Day 2 — Koh Haa, Koh Lanta National Park

We began again at Koh Haa Yai, the famous “Cathedral,” where the large caverns glowed with natural light. Cleaner pipefish hovered above sandy patches, yellow boxfish zig-zagged between boulders, and golden trevallies cruised through shoals of rabbitfish. Hermit crabs roamed along the rocky edges, tiger cowries shimmered on the walls, and Moorish idols danced gracefully in pairs. Surgeonfish, fairy wrasses and angelfish of all sizes added movement around the cathedral arches while another yellow-margin triggerfish watched us pass with suspicion.

Koh Haa Lagoon offered calm, crystal-clear water between islands 2 and 4. A giant moray eel and a yellow-edge moray eel shared the same patch of reef while Durban dancing shrimps and partner shrimps worked tirelessly at cleaning stations. Garden eels swayed like tall grass on the sandy bottom, convict blennies formed tight black-and-white tornadoes, and a red-marbled lizardfish watched for prey. Bearded scorpionfish lay perfectly still, and yellowfin soldiers hovered above the rocks. Two dogtooth tunas patrolled the perimeter while giant trevallies and juvenile emperor angelfish added flashes of yellow and blue. Wrasses, anthias, parrotfish and goatfish swirled across the lagoon.

At Koh Haa Chimney, we descended through the famous vertical tunnel before circling the large boulders outside. Yellow-lined snappers formed dense clouds, neon fusiliers streaked through the blue, and giant trevallies and dogtooth tunas swept along the deeper edges. A giant coral grouper patrolled the sandy bottom, and a proud peacock mantis shrimp marched boldly along the wall. Inside the entrance cave, nudibranchs glossodoris cincta and bornella anguilla decorated the rock while a graceful young banded sea snake hunted in the shallow 3-meter water as we finished the dive.
​
Our sunset dive at Koh Haa Yai Reef was magical, with schools of Moorish idols, lined surgeonfish and copperband butterflyfish gliding above healthy hard corals and vibrant sea fans. Branching acropora, mushroom corals and large plate corals created perfect backdrops as the day slowly shifted into dusk.
Scuba Diver in Swim Through with Fan Thailand Liveaboard
Peacock Mantis Shrimp Thailand Liveaboard
School of Fusiliers Thailand Liveaboard
Juvenile Angelfish Thailand Liveaboard

Day 3 — Entering Phi Phi National Park

A protected archipelago known for limestone cliffs, caverns & rich megafauna

Phi Phi National Park welcomed us with its dramatic limestone peaks and nutrient-rich waters.
Our first dive at Koh Bida Nok delivered an abundance of life. We found four tigertail seahorses clinging to sea fans, two banded sea snakes exploring crevices and a massive lobster hiding under a ledge. A beautifully patterned Dermatobranchus ornatus nudibranch crawled across a rock. Blacktip reef sharks glided by, and a resting leopard shark offered a serene moment. Schools of yellow-lined snappers and juvenile silver batfish danced in loose formation.

At Anemone Reef, the pinnacle was fully carpeted with blue, green and pink anemones swaying with the current, home to colourful anemonefish and porcelain crabs. Cometfish hovered above the reef while squids moved in formation. Yellowback fusiliers, neon fusiliers and yellow-lined snappers circled continuously while a fimbriated moray eel shared a crack with two white-eye morays. A yellow-edge moray eel and a copperband butterflyfish completed the scene.

Shark Point offered yet another highlight with gigantic pickhandle barracudas at a cleaning station, schools of blacktail barracudas, and a pair of pharaoh cuttlefish mating in the shallows. Large barrel sponges and elegant sea fans decorated the ridge. Fimbriated, white-eye and giant moray eels appeared one after another, while copperband butterflyfish played among the soft corals. Wrasses, anthias, damselfish and soft-coral gobies filled every corner of the reef.
​
We then began our long navigation north — about 15 hours — following the coastline of Phuket and the Phang Nga region toward the Similan Islands.
Pink Clownfish in Anemone Thailand Liveaboard
Lobster Thailand Liveaboard
Scuba Diver Films School of Snapper Thailand Liveaboard
Mating Pharaoh Cuttlefish Thailand Liveaboard
Scuba Divers with Huge Barrel Sponge Thailand Liveaboard
Banded Sea Krait Thailand Liveaboard

Day 5 — Similan National Park

Nine granitic islands with some of Thailand’s healthiest reefs

After a smooth 12-hour crossing, the iconic boulder landscapes of the Similans appeared on the horizon.
Our first dive at East of Princess Bay (Island 4) took us through Stonehenge, where large slabs of granite formed passageways filled with octopus, giant trevallies and juvenile oriental sweetlips. Lined surgeonfish moved calmly across the reef while peacock mantis shrimps patrolled the sand. Butterflyfish, angelfish, fairy wrasses and juvenile wrasses added colour at every turn.

West of Eden was spectacular with an ovula ovum cowrie mating on a coral head, schools of pennant coralfish weaving between boulders, and both yellowface and bluering angelfish showing off their vibrant colours. African coris and pastel ring-wrasse danced over the hard corals while a white-tip reef shark cruised by, followed closely by five imposing giant trevallies. Blue dragons decorated the coral blocks and a clown triggerfish impressed our divers. Gobies, chromis and small anthias flickered in the light.

At Hideaway, honeycomb groupers, peacock hinds, coral groupers and longface emperors dotted the reef, joined by oriental sweetlips and a mixed school of bluestreak and dory snappers. Durban dancing shrimps cleaned patiently below, while schools of juvenile blackfin barracudas and young bluefin trevallies hunted together with yellow-saddle goatfish.
​
The night dive at West of Eden revealed sleeping parrotfish, squirrelfish, soldierfish, hunting morays, long-legged spiny lobsters, glossy nudibranchs and massive moon groupers patrolling the shadows. Cardinalfish, sweepers and nocturnal wrasses reflected the torchlight.
Red Tailed Butterflyfish Thailand Liveaboard
Scuba Diver Behind Coral Covered Rock Wall Thailand Liveaboard

Day 6 — Similan Islands 4, 7 & 8

Honeymoon Bay (Island 4) greeted us with two octopuses mating in the sand channel. Dogtooth tunas circled the reef while cometfish, Durban dancing shrimps and partner shrimps explored the coral heads. A school of black-tail damselfish illuminated the water column, and a bright Halgerda tessellata nudibranch was the star of the macro search.

Back at West of Eden, we encountered another dogtooth tuna, a large green turtle and a small hawksbill turtle. Three more octopuses were spotted, including another mating pair. Leopard blennies peeked from holes while black-veined, dusky and two-coloured parrotfish grazed among the corals. Three-spot angelfish, hermit crabs and banded pipefish added to the action.

Elephant Head Rock delivered its signature swim-throughs, where giant trevallies roamed alongside giant yellow boxfish, porcupinefish, unicorn sweetlips, Andaman sweetlips, six-banded angelfish, rabbitfish, spotted boxfish and map puffers.
​
Our sunset dive at Turtle Rock (Island 8) featured brassy drummers, more giant yellow boxfish, black surgeonfish, blackear wrasse, spotted-tail dart gobies, porcelain crabs, marble groupers, coral groupers, tiger cowries and a parade of parrotfish grazing the reef. A pygmy squid darted in and out of view, and an octopus displayed brilliant colors as it hunted among the rocks.
Scuba Diver With Sea Fan Thailand Liveaboard
Four Nudibranches Together on Coral Reef Thailand Liveaboard
Andaman Sweetlips Thailand Liveaboard
Powder Blue Surgeonfish Thailand Liveaboard
Angelfish and Oriental Sweetlips Thailand Liveaboard
Octopus with Coral Reef Thailand Liveaboard
can you spot the 2 octopus?

Day 7 — Island 9 & Beyond

Eagle’s Rock surprised us with beautiful coral bommies and granite formations sheltering giant morays, bluefin trevallies, dogtooth tunas and sail-finned surgeonfish. A tiny juvenile rockmover wrasse danced hypnotically across the sand.

At Donald Duck Bay, we explored the iconic boulders and giant barrel sponges where peacock mantis shrimps peeked out from holes. Dogtooth tunas, bluefin trevallies, giant morays, clownfish, blue dragons, sail-finned surgeons, sea fans, puffers, hawkfish, cometfish and oriental sweetlips kept us entertained. A tiny teardrop butterflyfish juvenile danced near the surface.

Back to Elephant Head Rock for our third dive of the day, we crossed paths with a white-tip reef shark, slender groupers, lizardfish, coral groupers, giant trevallies, bluefin trevallies and huge schools of neon fusiliers lighting up the blue.
​
Our blackwater dive was a festival of planktonic life — larval mantis shrimps, long chains of siphonophores, crab larvae, salps carrying tiny fish companions, squids, larval anemones, larval triggerfish, eel larvae, drifting jellyfish and countless shrimp and spreadfish. Even a tiny larval lizardfish appeared under our lights.
Blue Ringed Angelfish Thailand Liveaboard
Pink Clownfish and Anemone Thailand Liveaboard

Day 8 — Final Day: Honeymoon Bay & Boonsung Wreck

Our last morning at Honeymoon Bay was peaceful with a gentle zebra shark resting on the sand. Parrotfish, rabbitfish, wrasses and schools of fusiliers glided calmly above the reef while gobies, blennies and butterflyfish added colour to the shallows.
​
Boonsung Wreck, as always, was a fish soup of the highest order. Clouds of juvenile yellowback fusiliers, neon fusiliers and blue-striped snappers filled every corner while juvenile silver batfish shimmered around the structure. Porcupinefish floated in groups like balloons, honeycomb and white-eye moray eels peeked from the metal plates, pompano hunted through the clouds of fish and big-eye trevallies zig-zagged through the chaos. Chromodoris kuniei and bright Halgerda nudibranchs crawled along the beams as damsels, wrasses and parrotfish weaved through the dense schools.

We surfaced from our final dive tired, happy and already eager for the next adventure, ending our trip at Tap Lamu Pier with big smiles all around.
Leopard Shark Thailand Liveaboard
Scuba Diver with Soft Coral Thailand Liveaboard
Porcupine Fish Thailand Liveaboard
Sweetlips Thailand Liveaboard
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Trip report from the 10th to 17th November 2025, across Myanmar and Thailand

19/11/2025

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November 10th 2025 thailand and myanmar diving trip report
​The MV Smiling Seahorse set off once again for an exceptional cross-border adventure — a journey from Thailand’s Surin & Similan National Parks to Myanmar’s wild Mergui Archipelago. This week we welcomed our wonderful guests from Israel, excited to explore two countries, two ecosystems, and a whole spectrum of marine life.
After check-in and Thai immigration formalities, we boarded the boat and headed across the Pakchan River to Kawthung for Burmese immigration. Passports stamped, gear prepped, smiles wide — our expedition began.
Andaman Sea Sunsets
Sunset on the Myanmar and Thailand Andaman seas...

Day 2 — Mergui’s First Wonders

​Our first dive at High Rock was the perfect warm-up. We drifted along the rocky outcrops and immediately met two tigertail seahorses hiding among the hard corals. Thornback boxfish hovered curiously near the walls while crocodile needlefish glided just under the surface. A busy peacock mantis shrimp scuttled across the sand, and Durban dancing shrimps flashed their white antennae from inside tiny crevices. Moray eels peeked out from the reef — fimbriated and white-eye morays sharing the same neighbourhood — and a cooperative group of four scribbled filefish swam past, changing colour as they fed. Schools of trumpetfish, lionfish, bearded scorpionfish, coral and peacock groupers, snappers, fusiliers, and a handful of blackfin barracudas filled the water column, with a white-tongue trevally circling us during the safety stop.

At Three Islets, the Submarine site gave us a lovely first encounter with a bamboo shark tucked into a rocky crack, and a turtle drifting lazily overhead. We found orange-spotted pipefish and the elegant nudibranch Chromodoris rufomarginata on the sandy slope. Shark Cave was buzzing with life; the entire cave shimmered with sweepers, and outside the entrance clouds of fusiliers pulsed in the current. Sergeant majors were fiercely defending their eggs while wrasses, angelfish, butterflyfish, and triggerfish opportunistically picked at any moment of distraction. Wahoos streaked through the blue, accompanied by a great barracuda, golden trevallies, and even a giant bicolour parrotfish. Square continued the spectacle with more tigertail seahorses, a giant moray, and well-hidden bearded scorpionfish.
​
Our night dive around Square and Shark Cave was a treasure hunt of nocturnal critters. Five tigertail seahorses showed up, along with sponge spider crabs, decorated crabs, Godiva quadricolor nudibranchs, and sleepy pufferfish wedged among the corals. Soldierfish and cardinalfish hovered in the glow of our torches while hinge-beak shrimp and banded cleaner shrimp darted from rock to rock.
snake eel andaman sea
Snake eel out and about!
High Rock, Mergui Archipelago, Myanmar
High Rock, Mergui Archipelago, Myanmar
fimbriated moray eel
fimbriated moray eel
White eyes moray eels, Mergui Archipelago
White eyes moray eels, Mergui Archipelago
Feet of a crown of thorn seastar, Amdaman Sea, Myanmar
Feet of a crown of thorn seastar

Day 3 — Twin Islands & Blackwater Magic

At North Twin Reef, we descended into crystal-clear blue water where sea snakes wove gracefully across the reef. Oriental sweetlips gathered in loose schools, and anemonefish bobbed in their host anemones. Giant morays, surgeonfish, and redtooth triggerfish patrolled the boulder fields. Seal-face pufferfish, boxfish, and a forest of staghorn, lettuce, and foliose corals created a vibrant underwater landscape.
​
South Twin Reef delivered even more action with partner shrimps and peacock mantis shrimps scurrying along the sandy patches. Juvenile triggerfish flicked between coral heads while gold-saddle rabbitfish fed in tight groups. Four dogtooth tunas shot past in formation. Blue dragon nudibranchs were scattered everywhere, and the reef was alive with lined and stripe-bristletooth surgeonfish. A Jenkins ray rested on the sand beside a blue-spotted stingray, while yellow-edge and giant morays watched from shaded holes. An octopus shifted colours as we approached, and juvenile oriental sweetlips wiggled in their rhythmic dance. We ended the dive drifting over beautiful table corals and elegant funnel corals.
myanmar seahorse
Day octopus, Mergui Archipelage
Day octopus
peacock mantis shrimps, South Twin Reef
Peacock mantis shrimps
colorful nudibranch of Mergui Archipelago
That evening’s blackwater dive was a mesmerising drift over the deep. Squid zipped through our lights while baby scribbled filefish floated in their larval form. A banded sea snake surprised us with a rare mid-water visit. Transparent larval shrimps, lobsters, crabs, and mantis shrimps hovered like tiny spacecraft, and pteropods and flying-gurnard larvae pulsed through the darkness.
flying-gurnard larvae pulsed through the darkness
flying-gurnard on a Blackwater
Picture
Comb jelly on a blackwater dive

Day 4 — Sea Fan Forest & Western Rocky

Our two dives at Sea Fan Forest were spectacular. We explored towering forests of gorgonians where another tigertail seahorse clung to the branches. Yellow-lined and neon fusiliers filled the water column, pursued by rainbow runners weaving through the openings. We found several octopus, stonefish, and devil scorpionfish, along with nudibranchs such as Chromodoris, Risbecia annulata, and Geometrica. Zebra morays slithered over the rocks, yellow trumpetfish hovered motionlessly beside sea fans, and peacock mantis shrimps guarded their burrows. Juvenile boxfish, needlefish, and a perfectly-patterned young emperor angelfish added splashes of colour. A curious cuttlefish rounded off the dive with a gentle display of shifting patterns.

At Western Rocky, we entered the famous cave with octopus and cuttlefish patrolling the entrance. Coral-banded shrimp and red reef crabs clung to the walls, and we spotted a delicate wentletrap snail and a striking Maldivian sponge snail on the sandy floor. Blue dragon nudibranchs added flashes of purple and white as we continued along the reef, passing bannerfish, goatfish, snappers, and butterflyfish enjoying the current.
​
Our sunset dive around the Western Rocky islets unfolded beautifully as clouds of fusiliers, sergeant majors, and damsels swirled around us. Harlequin shrimps crept delicately over the rocks, and more Maldivian sponge snails dotted the reef. White-tongue trevallies chased schools of baitfish, accompanied by scribbled filefish, pyjama surgeonfish, rainbow runners, golden trevallies, and a pack of blacktail barracudas. At one point, two giant morays squeezed together inside the same hole, seemingly unbothered by each other's presence.
Golden strip fusilier
Golden strip fusilier
Tiger tail seahorse, Mergui Archipelago, Myanmar
Tiger tail seahorse
Harlequin shrimps crept delicately over the rocks, Western Rocky dive site
Harlequin shrimps hiding well
Cuttlefish, always curious and beautiful
Cuttlefish, always curious and beautiful
Nudibranch Phyllidia varicosa
Nudibranch Phyllidia varicosa
Red reef crab
Red reef crab

Day 5 — Mantas, Currents & Forest Walls

Back at Dendro’s Peak, we descended along a slope draped in purple soft corals. Yellow-lined, neon, and yellowback fusiliers streamed past in glittering clouds while rainbow runners and mackerel darted along the edges. Bannerfish hovered near coral heads, trevallies patrolled the shallows, and a banded sea snake explored the cracks. Zebra morays peeked out from the reef, and coral groupers hunted through the bommies. A large turtle drifted peacefully overhead — and then the highlight of the day arrived as two magnificent manta rays swept gracefully above us, circling repeatedly.

The afternoon dives at Sea Fan Forest were equally memorable. Fusiliers filled every corner of the reef, and another tigertail seahorse clung to a sea fan. A pharaoh cuttlefish hovered confidently before drifting away into the blue. Pickhandle barracudas and golden trevallies patrolled the sandy patches while batfish, moorish idols, and titan triggerfish appeared throughout the site. A large tiger cowrie, several anthias, wrasses, butterflyfish, and damsels added detail to the coral scene. More octopus and a well-camouflaged stonefish ended the day.
​
That night’s blackwater dive was exceptionally special, featuring a female paper nautilus drifting like a delicate origami shell. Larval wrasses and tiny fish sheltering inside jellyfish floated through the dark, and we found many larval triggerfish and fish living inside salps — a perfect finale to the drifting night.
Paper nautilus, Blackwater diving, Mergui Archipelago
Paper nautilus, Blackwater
female paper nautilus drifting like a delicate origami shell
female paper nautilus drifting like a delicate origami shell

Day 6 — Into Thailand: Surin & Richelieu Rock

We re-entered Thailand in the early hours and cruised south toward Richelieu Rock, where perfect conditions awaited us.
What Makes Richelieu Rock Famous?
  • A horseshoe-shaped pinnacle covered in purple and pink soft corals
  • Massive schools of trevallies, barracudas, and snappers
  • Incredible macro life: ghost pipefish, harlequin shrimps, tiger eggs cowries
  • Historically known for whale shark sightings
  • Named after Admiral Andreas du Plessis de Richelieu, a Danish officer who served as Commander-in-Chief of the Royal Siamese Navy — not the French cardinal, despite the popular legend

Our first dive at Richelieu Rock was enchanting. Dense schools of glassfish wrapped the entire reef in a shimmering veil. Longnose emperors worked in tight groups, flashing brilliant colours as they hunted, while giant trevallies, bluefins, white-tongue trevallies, and bigeyes patrolled the edges. Batfish hovered calmly around the cleaning stations, and titan triggerfish bulldozed their way along the bottom. Octopus displayed quick colour changes, and huge potato groupers watched us from between the cracks. White-eye, zebra, and yellow-edge moray eels peeked from the crevices, and tiny tiger-egg cowries clung to sea fans. Nudibranchs including chromodoris and flabellina added delicate splashes of colour while bannerfish, wrasses, dartfish, anthias, and butterflyfish decorated every corner of the reef.
​
Our night dive at Surin South (Ao Pakkard) offered a different perspective. Giant red crabs prowled the sandy areas, Durban dancing shrimps and marble shrimps flickered under our torches, and boxer-banded shrimps waved their oversized claws. Parrotfish, surgeonfish, and pufferfish were already tucked into their nighttime hideouts, while barracudas sliced through the dark hunting yellowback fusiliers.
Durban dancing shrimps
Durban dancing shrimps
Great dives = happy divers! Mergui Archipelago, Myanmar
Great dives = happy divers!
A barracuda gleam in the dark
A barracuda gleam in the dark
Marine flatworm, Pseudobiceros
Marine flatworm, Pseudobiceros

Day 7 — Richelieu, Similans & Koh Tachai

We returned to Richelieu Rock for two more morning dives filled with action. Longnose emperors swam in the shallows where cleaners worked tirelessly around their open mouths. Giant trevallies and chevron barracudas surged through the schools of glassfish. We found beautiful harlequin shrimps, cleaner and orange-spotted pipefish, and several potato groupers cruising the bommies. Boxfish, angelfish, needlefish, cobia, black snapper, and African pompano all made appearances. A large marble ray glided past us to complete the scene.
Similan National Park Highlights
  • Famous for giant granite boulders and white-sand beaches
  • Excellent visibility and vivid blue water
  • Frequent encounters with manta rays, whale sharks, and giant trevallies
  • Beautiful coral gardens with sea fans, hard corals, and soft coral patches

Our third dive at Koh Tachai brought us into the energetic mix this site is known for. Bluefin trevallies and chevron barracudas hunted in packs while giant trevallies and dogtooth tunas patrolled the deeper zones. Marble groupers rested on the bommies while longfin bannerfish, unicorn surgeonfish, angelfish, and massive swarms of fusiliers filled the reef. Lobsters and snappers hid among the corals, and batfish drifted by in lazy groups.
​
At Koh Bon, we explored the ridge and bay where hard corals glowed beautifully in the afternoon light. A baby blacktip shark cruised the shallows while an octopus hid in a coral crack. Maldivian sponge snails dotted the reef. The dive ended with colourful scenes full of wrasses, goatfish, butterflyfish, damsels, and scorpionfish, with the occasional wahoo and giant moray cruising through the dusk.
Banded coral shrimp, Myanmar diving
Banded coral shrimp
Nudibranche Bornella anguilla
Nudibranche Bornella anguilla
Sexy shrimp and anemones, Mergui Archipelago, Burma
Sexy shrimp and anemones
	Glossodoris cincta
Glossodoris cincta

Day 8 — Racha Noi to Finish

​Our last day took us south to Racha Noi, where Banana Bay offered a relaxed sandy slope with scattered bommies teeming with damsels, redtooth triggerfish, Meyer’s butterflyfish, fiveline and checkered snappers, longbarbel goatfish, squirrelfish, and gold-saddle rabbitfish. A banded sea snake glided along the reef, and a mantis shrimp, guarded closely by its pair of squat shrimps, kept watch from its burrow.
At Manta Reef, we found Glossodoris cincta​, a snowflake moray, and several seal-face pufferfish drifting over the sandy bottom. Garden eels swayed in the light current as blue-spotted rays glided past. Butterflyfish, damsels, and a bearded scorpionfish rounded out the dive while yellowback fusiliers danced above in glittering swirls.
Porcelain anemone crab, Andaman Sea
Porcelain anemone crab
Beautiful soft coral in Mergui Archipelago
Beautiful soft coral
Marine hermit crabs
Marine hermit crabs
Orange sun coral
Orange sun coral

A Perfect Journey Across Two Countries

Impeccable MV Smiling Seahorse diving deck
Picture
Picture
​From Myanmar’s caves and giant sea fans to Thailand’s iconic reefs, this trip delivered unforgettable moments: manta rays, seahorses, endless fusiliers, dramatic landscapes, and amazing energy from our guests.
Thank you to our wonderful divers from Israel for sharing this week with us and their wonderful photos to illustrate this blogpost!
See you soon for another adventure with the MV Smiling Seahorse! 🐟💙
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Trip Report: Burma Adventure, Mergui Archipelago & Burma Banks - 31 October – 08 November 2025

10/11/2025

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November 2025 dive trip report
​The MV Smiling Seahorse officially launched the new diving season with a second unforgettable adventure across Myanmar’s remote waters — from the mysterious limestone islands of the Mergui Archipelago to the vast, sandy plateaus of the Burma Banks.
Our second group of the season — joining us from France — gathered at the pier in Ranong with bright smiles and even brighter expectations. After completing the immigration formalities and crossing into Myanmar via Kawthung, passports were stamped, bags stowed, and spirits high as we set course into the wild blue.
Burma sunset onboard my dive cruise
juvenile angelfish burma

​Day 2 — Warming Up the Fins

​Our check dive at High Rock revealed the season’s first treasures: tigertail seahorse, pickhandle barracudas, swirling fusiliers and jacks, peacock mantis shrimps, white-eyed moray eels, Spanish mackerel, and even a curious rainbow runner. Thornback boxfish, pharaoh cuttlefish, and orange-spotted pipefish rounded off the dive — an explosion of colour to start the trip.
The following dives took us to the magical Three Islets:
  • Dive 2 – “The Square & Shark Cave”:  tigertail seahorses, cuttlefish, blue dragons, Durban dancing shrimps, porcelain crabs (one of them carrying eggs!) , zebra and banded snake eels, and playful cleaner pipefish.
  • Dive 3 – “Submarine & Shark Cave”: the tunnels echoed with life — yellowtail barracudas, golden trevallies, a gliding eagle ray, tomato anemonefish, tigertail seahorse, a stonefish, a bamboo shark, and several moray eels.
Our night dive at Shark Cave & Square was pure magic — nine tigertail seahorses, including some mating! Add to that toadfish, cone snails on the move, sleeping parrotfish, soldierfish, and crustaceans galore — a proper nocturnal parade.
That night, the Smiling Seahorse pointed her bow north toward the legendary Black Rock.
pretty nudibranch in myanmar
stonefish camouflaging
porcelaine crab with eggs

​Day 3 — The Kingdom of Currents: Black Rock

​Four dives in total, each more electric than the last. One lucky group spotted a manta ray early in the day, while others drifted among eagle rays, cobias, tunas, yellowtail barracudas, and dense schools of bigeye trevallies.
Amid the action, we admired white devil scorpionfish, octopus, peacock mantis shrimps, lionfish, and patches of vibrant soft corals home to butterflyfish and wrasses.
A sunset dive sealed the day — schools of sergeant fish guarding their eggs, bannerfish, snappers, and reef octopus emerging as the light faded.
mergui archipelago liveaboard fish
octopus of the andaman sea

​Day 4 — North Twin & South Twin

​North Twin Pinnacle: barracudas, fusiliers, red snappers, and a few dogtooth tunas gliding in the blue.
At North Twin Reef, we crossed paths with broadclub cuttlefish, banded sea snakes, giant morays, mantis shrimps, and vibrant corals where angelfish, triggerfish, and surgeonfish danced in the current.
At South Twin Reef, two dives revealed Maldivian sponge snails, marbled groupers, schools of surgeonfish, pyjama surgeonfish, juvenile sweetlips, a fleeting whitetip reef shark, blue ribbon eels, and another elegant wahoo cruising by.
As the sun dipped, we turned our compass westward toward the open ocean — and the mythical Burma Banks.
north twin in Mergui Archipelago
pufferfish in cavern

​Day 5 — Into the Blue: The Great Burma Banks

​The Roe Bank welcomed us with two nurse sharks resting on the sandy bottom, a graceful mangrove whipray, and dogtooth tunas patrolling the edges.
At Coral Bank, the spectacle continued: more nurse sharks, a marble ray, honeycomb moray eels, and a bustling coral city alive with emperor and royal angelfish, neon fusiliers, powder-blue sergeants, velvet surgeonfish, clown triggerfish, trevallies, and Napoleon wrasses.
Even the safety stops were lively — schools of jacks and snappers swirling in golden light.
Myanmar's burma banks ray
shark burma banks

​Day 6 — Rainbow & Silvertip Banks

​The two morning dives at Rainbow Bank were a perfect blend of serenity and adrenaline. Marble rays, nurse sharks snoozing under bommies, clouds of fusiliers, surgeonfish, tunas, great barracudas, royal angelfish, giant sweetlips, potato groupers, and grey reef sharks filled the blue.
A third dive at Silvertip Bank offered encounters with Napoleon wrasses, grey reef sharks, and another nurse shark gliding past gracefully.
One group opted for a sunset dive among vibrant reef life — bannerfish, butterflyfish, wrasses, and anthias painting the scene — while the rest of the guests embarked on a surreal blackwater dive, drifting with larval anemonefish, eel larvae, stargazers, pyrosomes, siphonophores, venus girdles, and glowing comb jellies under the stars.
diving the burma banks incredible coral reef
Bigeye trevallis
honeycomb moray at the Burma Banks

​Day 7 — Sea Fan Forest & Western Rocky

​At Sea Fan Forest, enormous gorgonians lined the reef like underwater cathedrals. Neon fusiliers, trevallies, glassfish, pickhandle barracudas, and curious mantis shrimps mingled with stonefish, anemone crabs, and longnose hawkfish.
At Western Rocky, the current brought white-tongue trevallies, yellowfin barracudas, and marble shrimps out to play.
Our night dive at Western Rocky was a treasure hunt — sleeping trevallies, massive sponge crabs, feather star squat lobsters, giant morays, tiny shrimps on whip coral, coral cowries, phenacovolva snails, and even a sea butterfly fluttering through the torchlight.
sunset on Andaman Sea Liveaboard
butterfly fish at the Burma banks
We enjoyed a delicious barbecue dinner that night, featuring spare ribs, hand-cut French fries, tomates à la provençale, a fresh salad assortment, grilled chicken wings and sausages, along with potatoes en robe des champs served with a rich garlic butter.
Eating barbecue on my Myanmar liveaboard
a barbecue on my scuba diving liveaboard

​Day 8 — Return to Western Rocky

​Back at Sea Fan Forest, we spotted lionfish, devil scorpionfish, a fimbriated moray sharing its crevice with squat shrimps and a feisty spear mantis shrimp.
Our final dives at Eagle Rock, The Cave, and The Islets revealed pickhandle barracudas, longnose emperors, dogtooth tunas, boxfish, porcupinefish, nudibranchs like Chromodoris reticulata and Glossodoris cincta, harlequin shrimps, leopard morays, rainbow runners, and Napoleon wrasses.
beautiful visibility in Burma
bannerfish at Western Rocky

​Day 9 — Farewell Dive at Dendro’s Peak

​Our final dive brought a fitting finale: schools of snappers, fusiliers, yellowfin trevallies, a majestic great barracuda, banded sea snake, and one last fimbriated moray waving us goodbye.
With our tanks empty but our hearts full, we headed back to Kawthaung for our traditional Burmese beers, immigration clearance, and the sail back to Ranong.
The second expedition of the season was everything we’d hoped for — thrilling dives, wonderful guests, and the timeless magic of the Mergui Archipelago and Burma Banks. A big thank you to our wonderful guests for illustrating this blogpost with their photos!
Until next time — see you underwater aboard the MV Smiling Seahorse!
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    The Smiling Seahorse Diving Blog

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    ​The Smiling Seahorse has been running dive cruises from Ranong since 2012.
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