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Diving in the Lembeh Strait

Bizarre Wonderland

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...Highlights: great macro life/ marine diversity...
...Diving environment: beginner and advanced divers...

Mention Lembeh scuba diving to any serious underwater photographer and their eyes come over all misty and distant. No place on the planet gives you the chance to see more shy critters such as the mimic octopus, flamboyant cuttlefish, harlequin shrimps, skeleton shrimps and innumerable nudibranchs.

The fish also include the usual tropical reef suspects but also the more bizarre: Ambon scorpionfish, snake eels, stonefish, sea robins, stargazers, devil fish and even the weedy scorpionfish. There are also beautiful seahorses including pygmies, pegasus, mandarinfish, ghost pipefish and the endemic Banggai cardinalfish. Lembeh Strait dive resorts have a higher than average rate of return customers as enthused first-timers return year upon year, never tiring of the wonders of this undersea paradise. Show more

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Dive Site Descriptions

Aer Perang - The formation of this dive site was influenced by a World War II warship that blasted through the rocks in order to reach fresh water. The name literally means 'War Water'. It is a relatively shallow sand slope that is home to many rare species of octopus. Finding them hidden in nooks and crannies or under the sand takes some skill due to their expert ability to camouflage themselves. The mimic octopus in particular can change colour, shape and even the texture of its skin to blend in with their surroundings, and often they can be spotted here. Show more

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How to Dive Lembeh


If it is only Lembeh you are interested in then we suggest you stay on the island itself where the sites are only a short ride away and the dive resorts are excellent. Otherwise you can enjoy the Lembeh Strait diving sites, Bangka Island, Bunaken and beyond by liveaboard boat.

If you want to see more than the Lembeh Strait alone then you should consider combining your resort package with a few days in Manado/Bunaken. This way you get to see the full picture of what this splendid area has to offer.

For more information on your diving options, and all the other travel information you might need to visit Indonesia, check out our North Sulawesi dive resort section.



A dive permit has been introduced to combat the problem of floating rubbish in the strait from the nearby villages and port town of Bitung. The small fee is a once-off fee per annum and payable on arrival.


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Diving Season

You can go scuba diving in Lembeh all year but the conditions do vary. Water temperatures hit a peak of 28-29°C between October and March. Then they fall to their lowest at 25-26°C in July and August, which coincides with the greatest number of critters. Sightings have more to do with reproductive cycles than the seasonal movement of creatures. The small stuff of the strait doesn't travel far.

The October to December period has the best visibility. January and February have the lowest visibility, when the water temperature in the strait is at its warmest.

During the worst rainy season months of January and February some of the exposed dive sites at the far northern end of the strait may occasionally be out of bounds due to rough seas. Also from the month of June, when the south-east monsoon winds begin, to September, the surface of the strait can become a little choppy.

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Where is the Lembeh Strait and How Do I Get There?

Review our maps below of Sulawesi, showing the location of Lembeh, and its host country Indonesia. Here, you will find information on how to get to the Lembeh Strait.

Map of Sulawesi (click to enlarge in a new window) Map of Indonesia (click to enlarge in a new window)

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Reef Summary

Depth: 5 - 30m
Visibility: 10 - 25m
Currents: Gentle
Surface conditions: Calm
Water temperature: 25 - 29°C
Experience level: Beginner - advanced
Number of dive sites: ~55
Distance: ~45 km east of Manado (1½ hours)
Recommended length of stay: 5 - 10 days

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Useful References


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