A quiet mangrove-fringed bay on Bunaken Island with a small outrigger boat on clear turquoise water

Coral Triangle · Indonesia

Bunaken

Sheer walls drop from the surface, patrolled by turtles and napoleon wrasse.

Photo: kikofjl · CC BY 3.0

Bunaken National Marine Park off Manado in North Sulawesi is known for near-vertical walls that drop from the surface well past recreational depth, carpeted in soft coral, sponges, and sea fans. Sites like Lekuan and Fukui combine wall diving with sightings of napoleon wrasse, green and hawksbill turtles, and schooling jacks holding in the current along the drop-off. Water is clear year-round, and dives are typically drift dives along the wall with a boat pickup downcurrent.

About diving in Bunaken

Diving in the park follows a settled daily rhythm: two dives through the morning with the interval spent on the boat or on a beach, a third in the afternoon for those sleeping on the islands, and a return before the sea gets up. Boats run out from the Manado waterfront and from small resorts on Bunaken and Siladen, so the crossing is anything from most of an hour to a few minutes depending on where you stay. The cone of Manado Tua stands over the park and does most of the work of orientation from the surface.

The park is built to one template and the interest lies in how each site varies it. A shallow reef flat runs out from the island, ends at a lip, and drops away vertically; you kick across the flat, cross the edge, and the bottom simply stops being there. The face is cut with cracks, overhangs and small caves, and the fans on it stand out into the passing water rather than lying back against the rock. Corners and channels take the most flow and hold fish out in the blue, while the sheltered stretches run slower and reward working the ledges.

The characteristic dive is a long, slow drift with the wall on one shoulder and open water on the other, ascending through the profile so the last third passes over the sunlit reef flat where the safety stop happens. That shallow top is the most productive part of many dives and the reason snorkellers get a real day out of the same sites. With no bottom in sight to judge depth against, gauge discipline sits entirely with the diver, and guides tend to brief that point before anything else.

It suits divers who want straightforward navigation and dependable fish life without technical demands, and it is a reasonable place to build confidence in moving water, since the flow usually tracks along the wall rather than down it. Down-currents do occur at the exposed corners, which is why the ascent plan and markers get briefed rather than assumed. Divers who want macro subjects and long bottom times over sand find the format repetitive after a few days, which is why the usual North Sulawesi week splits between here and Lembeh Strait.

When to dive Bunaken

Month-by-month season rating for Bunaken
JanFebMarAprMayJunJulAugSepOctNovDec
GoodGoodGoodGoodPrimePrimePrimePrimePrimePrimeGoodGood

May–October dry season gives the clearest water; some rain and runoff November–April.

Getting there

Manado is the gateway; boats run out to the park from the city waterfront and from small resorts on Bunaken and Siladen island. All diving is day-boat based, and a marine park entry fee is collected locally, usually handled through the resort. Most trips pair the walls with the black-sand diving of Lembeh Strait, a road transfer away on the opposite coast.

Wildlife calendar

Turtles are the constant, resting on ledges and grazing the reef top on most dives. Napoleon wrasse, groupers and jacks hold where current hits the corners, and nudibranchs are the reef-flat consolation when the blue stays empty. Reef sharks and eagle rays are luck rather than plan. Presence barely shifts across the year; May to October rates highest for clarity.

Dive types & marine life

  • Wall
  • Reef
  • Drift
  • Reef sharks
  • Sea turtles
  • Napoleon wrasse
  • Eagle rays
  • Trevally & jacks
  • Groupers
  • Nudibranchs
  • Pristine corals

Notable dive sites in Bunaken

  • Lekuan I

    Vertical wall thick with soft coral and passing turtles.

  • Fukui

    Sloping reef known for napoleon wrasse and schooling jacks.

  • Mike's Point

    Current-exposed wall and swim-through popular with reef sharks.

  • Sachiko's Point

    Steep wall drift dive with dense fish life and turtles.

Photos from Bunaken

  • Bernard DUPONT · CC BY-SA 2.0

  • Bernard DUPONT · CC BY-SA 2.0

  • Bernard DUPONT · CC BY-SA 2.0

  • Bernard DUPONT · CC BY-SA 2.0

Dive videos

Scuba Diving Bunaken National Park - Indonesia in 2022 · North Sulawesi Underwater - by Pim van Schendel on YouTube

Exploring Bunaken's Best: Scuba Diving The Lekuan and Tanjung Walls #scubadiving #northsulawesi · Scuba Diving and Dogs on YouTube

Photo credits

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