Photo: Sebastian Pena Lambarri / Unsplash
Bunaken
Bunaken National Marine Park sits off Manado at the north tip of Sulawesi, and it is built on walls. Steep coral cliffs drop from the surface past 40m into blue water, and you dive them as drifts along the face. The draw is fish diversity and reliable big-turtle encounters: green and hawksbill turtles are seen on most dives, with divers often counting ten or more in an hour along Lekuan. Whitetip and blacktip reef sharks, schooling barracuda, giant and bigeye trevally, bumphead parrotfish and Napoleon (humphead) wrasse turn up regularly, and the exposed points like Sachiko's pull in bigger pelagics on current. It pairs naturally with Lembeh Strait an hour to the east: walls and reef fish here, black-sand muck diving for rare critters there, and many trips do both. Conditions suit a wide range, with beginner-friendly walls at Lekuan and stronger drifts at Sachiko's and Mandolin for the experienced. Visibility is a real strength, commonly 20-35m and clearer in the dry months. The main trade-offs are surface run-off after heavy rain, boat time to reach sites, and a park that is popular enough that walls can feel busy in peak season.
What makes it special
- Sheer coral walls dropping past 40m, dived as drifts along the face
- Reliable green and hawksbill turtle encounters, often ten or more in an hour on the Lekuan walls
- High reef-fish diversity plus reef sharks, big barracuda, trevally schools and Napoleon wrasse
- Pairs with Lembeh Strait an hour away for a walls-plus-muck combined trip
Price range
$–$$
Trip length
5–10 days
Diver level
Open water
Trip type
Land based, Day trip, Shore dive
Price is per person for a typical trip, excluding international flights ($ under $2,000 to $$ $2,000–4,000).
Land-based dive resorts on Bunaken and Siladen span budget guesthouses to upscale eco-resorts; a 7-day dive package commonly runs roughly $1,200-3,500 per person excluding flights, depending on resort. The Bunaken National Park entrance fee is separate: Rp150,000 (about $10) for a waterproof tag valid the full calendar year, or Rp50,000 per daily ticket for foreign visitors.
Best time to dive
- Current
- Moderate
- Water temp
- 27–30°C (coldest Jun, warmest Jan)
- Visibility
- 15–40m — Commonly 20-35m; can reach 40m+ in the dry months (roughly May-August). Heavy rain in the NW monsoon (Nov-Feb) brings run-off that cuts visibility on some days.
- Getting there
- Easy — Day trips from a coastal base, about 1.5h from the airport.
- Experience
- The Lekuan walls are gentle enough for Open Water divers and training. Exposed points such as Sachiko's Point and Mandolin can run strong current and are better suited to Advanced Open Water divers comfortable with drift diving.
Nearest airports
- MDC — Sam Ratulangi International Airport (Manado) (Domestic hub reached via Jakarta (CGK), Makassar (UPG) or Singapore (SIN); then a road transfer to a Manado pier and a boat to the island resorts)
Permit required
All visitors to the marine park (divers, snorkelers, day visitors) must buy a Bunaken National Park entrance tag on arrival and display it while in the park.
Bunaken National Marine Park entrance fee for foreigners: Rp150,000 (about $10) for a waterproof pin/tag valid the whole calendar year, or Rp50,000 for a daily ticket. Payable in cash on arrival; most resorts arrange it.
Marine life
Sightings are never guaranteed — the bars show typical likelihood by month.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon wrasse are drawn to the cleaning station at Fukui Point and cruise the exposed walls; large individuals are seen but they are wary.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Schools form on current at the exposed points; numbers build when the drift is running.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Groups graze the reef tops, most often encountered around Mandolin and the eastern walls.
| Month | Likelihood |
|---|---|
| January | rare |
| February | rare |
| March | rare |
| April | rare |
| May | rare |
| June | rare |
| July | rare |
| August | rare |
| September | rare |
| October | rare |
| November | rare |
| December | rare |
Occasionally seen in the blue off the more exposed points such as Sachiko's, but far less reliable than the reef whitetips and blacktips.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Seen alongside green turtles on the walls, though less numerous; often resting in crevices and on coral ledges.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Large solitary barracuda along the walls and dense schools at current-swept points like Mandolin and Sachiko's.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Passing eagle rays are seen off the exposed points and along Bunaken Timur, sometimes in small groups, but sightings are not guaranteed.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Patrols the shallower reef tops and wall edges; encounters are fairly frequent but not guaranteed on any single dive.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Large trevally hunt along the wall faces at Mandolin and Sachiko's; some individuals are reported at 80kg-plus size.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
The signature Bunaken encounter; green turtles are seen on most dives, with counts of ten or more in an hour reported on the Lekuan walls.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
The walls and slopes hold a wide variety of nudibranchs; Bunaken Timur and the Siladen reefs are good for macro-focused dives.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Regularly resting on ledges and in crevices along the deeper wall sections; the most commonly seen shark in the park.
Dive sites
Worth knowing before you book
- Heavy rain in the NW monsoon (roughly November-February) brings surface run-off that can cut visibility and roughen the crossing on some days.
- Nearly all diving is boat-based, so reaching the outer points means 20-60 minutes each way rather than stepping off a house reef.
- Bunaken is a popular, established park; the best walls such as Lekuan can be crowded with other boats in peak dry season.
- The headline sharks are reef whitetips and blacktips, not big-pelagic action; grey reef sharks and eagle rays are occasional, not guaranteed.
- It is a long-haul destination reached via domestic connections through Jakarta, Makassar or Singapore to Manado, plus a road-and-boat transfer.
Sources & last checked
Checked July 2026
This is a researched draft, not yet human-verified. The seasonality and logistics are drawn from the sources below — confirm specifics (permits, fees, closures) with an operator before you book.
- Bunaken Diving, Manado, Sulawesi - Indonesia — Dive The World
- Diving Bunaken — Raja Laut Dive Resort
- Scuba Diving in Bunaken and Manado — ZuBlu
- Bunaken - Travel guide — Wikivoyage
- How to get to Bunaken — Two Fish Divers
- How to get there - Happy Gecko Dive Resort, Bunaken — Happy Gecko Dive Resort
Note on the data: Water temperature is interpolated from a published 27-30°C year-round range, not measured per month. Site coordinates are approximate island-level positions. Marine park fee (Rp150,000 annual / Rp50,000 daily for foreigners) is corroborated across multiple operator and travel sources but not from a primary government page. Resort price band is a general estimate spanning budget to upscale properties. Water temperature: Warm year-round at roughly 27-30°C; the monthly values are interpolated from a published year-round range, with a slightly cooler dip around the mid-year dry season. A 3mm suit is typical. Access: From Manado's Sam Ratulangi Airport (MDC) it is roughly 30-45 minutes by road to a Manado pier, then about 20-60 minutes by boat to the island resorts; the crossing is sheltered coastal water, not an open-ocean passage. Independently verified 2026-07-20 (confidence medium).