Day 1 – From Ranong to the Mergui Archipelago
Day 2 – South & North Twin Reefs
Dive three brought us to North Twin Reef, where octopus activity was high, giant moray eels dominated the crevices, and Chromodoris annulata appeared again along the reef. A few coral groupers, powder-blue surgeonfish, and titan triggerfish completed the scene.
The night dive in North Twin Bay was pure atmosphere. Curious octopus, squids, jellyfish sheltering tiny fish, big red reef crabs, scorpionfish, and bar-tail moray eels filled the darkness. Parrotfish and triggerfish were found sleeping, firmly wedged into the rock, their trigger spine locked in place to keep predators at bay, a perfect example of reef survival after sunset.
Day 3 – Black Rock
Macro life was everywhere, with anemone crabs, cleaner shrimps, squat shrimps, bearded scorpionfish, and colorful nudibranchs. Neon fusiliers and yellowback fusiliers formed dense clouds around the pinnacle, constantly shifting with the current.
The night dive revealed a different Black Rock, with pygmy squid hunting shrimps, devil scorpionfish, bar-tail moray eels, sleeping parrotfish, rabbitfish, and a stunning collection of cowries including tiger cowrie, money cowrie, and mole cowrie, along with basket stars and sea cucumbers carpeting the reef.
Day 4 – Three Islets & Sailing to the Burma Banks
Shark Cave delivered classic scenes of tomato anemonefish and Clark’s anemonefish guarding their eggs, anemone crabs, white-eye moray eels, schools of fusiliers, and wrasses repeatedly harassing sergeant majors protecting their nests.
At Square, tiger-tail seahorses stole the show alongside orange-spotted pipefish, golden trevallies, yellowtail barracuda, batfish, and spider crabs. The night dive added decorated crabs, sea snakes, cone snails, gorgonian crabs, and glowing nudibranchs to the mix.
After the final dive, we set course west toward the legendary Burma Banks, a remote chain of offshore seamounts rising from deep water and known for shark encounters and wide-open pelagic scenery.
Day 5 – Burma Banks
At Rainbow Bank, the scene remained wide open and shark-filled, with more nurse sharks gliding past mangrove snappers and schools of humpback unicornfish and sleek unicornfish. The reef itself was alive with pastel ringwrasse, moon wrasse, and African coris sweeping over the bottom, while chalk bass and royal dottybacks hovered close to the structure. Tiny blennies guarded their holes as blue and gold fusiliers streamed overhead.
The final two dives at Coral Bank brought white-tip reef shark into the mix, accompanied by powder-blue surgeonfish, epaulette surgeonfish, and golden rabbitfish grazing along the reef. The smaller life stole the show here, with cleaner wrasse, blackear wrasse, dragon wrasse, leopard blennies, chalk bass, royal dottybacks, and juvenile damselfish filling every crevice, turning these quieter dives into beautifully detailed reef explorations.
Day 6 – Burma Banks next
The evening ended with a blackwater dive, revealing larval flounder, larval mantis shrimp, post-larval porcupinefish, flying fish larvae, pencil squid, purple-back squid, larval anemones, siphonophores, comb jellies, and clouds of drifting plankton glowing in the darkness.
Day 7 – Sea Fan Forest & Western Rocky
The second dive turned into a true team effort as most divers joined a successful ghost net removal, freeing the reef from a massive abandoned net.
The afternoon and sunset dives at Western Rocky, covering the Islets, the Cave, and Eagle’s Rock, delivered schools of trevallies, fusiliers, yellowtail barracuda, lionfish, scorpionfish, titan triggerfish, ghost pipefish, giant moray eels, harlequin shrimps, and a spectacular Glossodoris cincta laying eggs. The day ended with our traditional BBQ and boat party under the stars.
Day 8 – Dendro’s Peak & Farewell
We then headed back to Kawthung for Burmese immigration, shared a last beer at the Smile Bar, and returned to Ranong, closing another unforgettable Mergui and Burma Banks adventure aboard the Smiling Seahorse.

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