Top 10 Dive Sites in Myanmar
The Mergui Archipelago sits off the southern coast of Myanmar in the Andaman Sea, comprising more than 800 islands that stretch nearly 400 kilometres from Kawthaung in the south to Mergui in the north. For most of the second half of the 20th century, this area was closed to foreigners, and this enforced isolation has left an underwater environment of exceptional quality: pristine reefs, enormous marine life biomass, and the kind of encounter density with large animals — manta rays, whale sharks, sharks of multiple species — that was once common throughout the Andaman Sea and Indian Ocean before fishing pressure removed it elsewhere. Myanmar diving is liveaboard diving; the logistics do not support day-boat operations to the archipelago's best sites, and that is precisely why those sites remain as good as they are.
1. Black Rock (Kanmaw Kyun), Mergui Archipelago
Black Rock is generally regarded as Myanmar's finest single dive site. The submerged seamount rises from deep water to eight metres below the surface, with walls dropping vertically on multiple faces to beyond 40 metres. The site sits at the northern entry to the archipelago where open Andaman Sea currents funnel past, creating the productivity that drives its extraordinary marine life. Manta rays are the headline attraction: reef mantas clean on the shallower sections while oceanic mantas sweep through the blue water off the deeper walls. Grey reef sharks, white-tip reef sharks, and whale sharks have all been recorded here. Strong current is the norm; Advanced Open Water and drift experience are required.
2. Western Rocky, Mergui Archipelago
Two rocky outcrops west of the main archipelago, Western Rocky experiences the full force of Andaman Sea current and is visited primarily by liveaboards that can time the dive carefully. The site produces the most reliable hammerhead encounters in Myanmar, with scalloped hammerheads appearing in groups on deep dives at 30 to 40 metres in the early months of the season. Bull sharks are also present. Beyond the sharks, the site's walls carry dense sea fan coverage, and schooling fish concentrate on the current-swept points. This is a Technical or advanced recreational dive; the depth combined with current exposure means dive planning and gas management must be precise. PADI Advanced Open Water is a minimum; Deep Diver specialisation is appropriate.
3. Mergui Archipelago: Rocky Island
Rocky Island, in the central section of the archipelago, sits on a key migration route and provides some of the most consistent manta ray diving in Myanmar outside of Black Rock. The island's submerged points and cleaning stations are visited by reef mantas most reliably from December through March. The walls adjacent to the cleaning stations descend to 30 metres, with significant sea fan and soft coral growth. Schools of barracuda — sometimes numbering in the thousands — patrol the current-swept east side. Leopard sharks rest on sandy patches at the base of the wall. Advanced Open Water level; current management is the primary skill required.
4. Burma Banks, Northern Andaman Sea
The Burma Banks are a series of submerged seamounts rising from 50 to 70 metres of water to within 15 to 20 metres of the surface, sitting far enough offshore that they receive open-ocean water quality. The banks are primarily a shark dive: silver-tip sharks are the most common species, typically seen patrolling the flat-topped summits and current-swept edges in groups. White-tip and grey reef sharks are additional species. Large grouper, napoleon wrasse, and schools of trevally use the banks as feeding grounds. The remoteness — two to three days sailing from Kawthaung on a typical liveaboard — limits access but ensures minimal dive traffic. Advanced Open Water minimum; extended range training is useful for the deeper summit edges.
5. Shark Cave, Mergui Archipelago
Despite the name, Shark Cave is more accurately a large cavern — a natural tunnel formation through a rocky outcrop at around 10 to 18 metres. White-tip reef sharks rest in the cavern in groups of five to ten animals, which is visually striking but benign behaviour; white-tips at rest in a shelter are among the most approachable of reef shark species. The cavern walls are covered in sponges and soft corals, and the light conditions — silhouette of sharks against the cavern entrance opening — make it one of Myanmar's most photographed dive situations. Advanced Open Water for confident navigation of the cavern; experienced Open Water divers can dive it with good buoyancy control and a briefing.
6. Torres Islands Reef, Southern Mergui
In the southern archipelago near Kawthaung, the Torres Islands group offers accessible reef diving as an introduction site or for less experienced divers joining a liveaboard for the first time. Reefs here are in excellent condition with high hard coral coverage and a full complement of reef fish species. Leopard sharks are resident on the sandy reef flats at eight to 15 metres, and sea turtles feed in the sea grass adjacent to the fringing reef. This area receives more dive traffic than the north given its proximity to the main access point, but the volume remains low by any international standard. Open Water level.
7. Three Islets, Central Mergui
Three small rocky islets in the middle section of the archipelago provide a typical Mergui diving experience at its most accessible: walls from five to 30 metres on the exposed faces, coral gardens on the sheltered sides, and the ever-present background of current-swept biology that characterises these waters. Large schools of fusilier make dense clouds over the shallower reef; below them, grouper and snapper work the coral structure. Nurse sharks rest under overhangs at the base of the wall. The site is suitable from Advanced Open Water level, with Open Water divers comfortable on the shallower coral garden. Conditions depend heavily on tidal state.
8. Diamond Island Reef, Far North
Diamond Island, at the northern limit of the main liveaboard range, sits closest to the point where the Mergui Archipelago transitions toward the Andaman Islands. The reef here sees very little traffic and the marine life density reflects this. The site offers walls from three to 30 metres on the island's exposed faces, with the shallower sections covered in an impressive mosaic of hard corals. Whale sharks pass through the channel between Diamond Island and the mainland shore during the early-season months. This is the kind of dive site that requires no particular feature to justify itself — the overall quality and undisturbed character of the reef is the experience. Advanced Open Water.
9. Lampi Island Marine National Park
Lampi Island, one of Myanmar's few formally protected marine areas, encompasses a reef system at five to 20 metres along its eastern coast that is the most legally protected diving in the archipelago. The park status has maintained coral coverage and fish populations at levels above the unprotected areas. Sea turtles are reliable, the fish biomass is high, and the shallower sections are suitable for Open Water divers. The park also provides context — the juxtaposition of protected and unprotected sites within the same liveaboard trip illustrates concretely the value of marine protection. Best dived on a flood tide when visibility peaks.
10. Egg Island Pinnacles, Southern Mergui
Near the southern end of the archipelago, a series of submerged granite pinnacles around Egg Island rise from 35 metres to five metres below the surface. The granite substrate supports a different biological community from the limestone reefs further north — encrusting red algae, large sponges, and encrusting corals rather than branching Acropora. The resulting appearance is darker and more dramatic. Schooling fish cover the pinnacle tops in good conditions; sharks patrol the base. A good dive for the end of a southern-circuit liveaboard. Advanced Open Water for the deeper pinnacle sections.
Planning Your Myanmar Dive Trip
The Myanmar dive season runs from October through May, with the northeast monsoon keeping the Andaman Sea calm and visibility good. June through September the southwest monsoon makes the archipelago inaccessible. Most divers arrive at Kawthaung (accessible by boat from Ranong, Thailand) or fly into Yangon and travel south. All meaningful Mergui diving is done from liveaboards — typically seven to 10 nights for the full northern circuit. A number of reputable liveaboard operators departed from Kawthaung with established safety records; research operators before booking given the remoteness of the diving environment. Nitrox is available on most liveaboards. No recompression chamber exists in the archipelago; Phuket in Thailand is the nearest facility. Open the map to explore the full distribution of documented dive sites across the Mergui Archipelago.