Dive Site: Jahir

Dive site facts: Jahir

Depth

5–30 m

Current

Gentle

Visibility

10–20 m

Water temperature

25–29 °C

Entry

Day boat

Level

All levels (good buoyancy required)

Dive type

Muck, macro, sand slope

Night dive

Possible

Region / port

Lembeh Strait, North Sulawesi

Coordinates

4.5585° S, 123.7496° E

Conditions & Currents

The Lembeh Strait generally experiences currents that are not excessively strong, owing to the protection offered by Lembeh Island. However, like many sites within the strait, Jahir's conditions can vary. Good buoyancy control is essential for diving Jahir due to the silty bottom composition, which can be easily disturbed. The modest currents and sheltered nature of the strait mean that surface waves are typically not a problem, ensuring relatively calm entry and exit conditions. Visibility is generally good at Jahir, often reaching 10-20 meters across the strait, though it can be reduced to 5-20 meters during the wet season, particularly in January and February due to increased runoff. Water temperatures consistently range from 25-29°C, and while thermoclines are not prominently mentioned, cooler water from July to September may influence some critter sightings.

Marine life & sighting chances

Hairy frogfish

July-September (cooler water) · common

Flamboyant cuttlefish

July-September (cooler water) · common

Blue-ringed octopus

common

Mimic octopus

common

Ambon scorpionfish

common

Dragonets

common

Nudibranchs

common

Seahorses

common

Ghost pipefish

common

Wonderpus

common

Stargazer

occasional

Bobbit worm

occasional

Dive profile & how the dive runs

Diving at Jahir typically begins with a descent to its relatively deep reaches, sometimes to 30 meters, where the good visibility allows for comfortable exploration of the sandy or rubble bottom. Divers will slowly patrol the dark volcanic sand, often following a guide who can spot the highly camouflaged macro life. The dive progresses as a slow, deliberate search, emphasizing patience and keen observation rather than covering extensive distances. The focus is on finding specific, often tiny, critters that blend seamlessly into the environment. Night dives at Jahir offer a different experience, as nocturnal creatures emerge, prompting a change in search patterns and subject matter. Ascent is gradual, with safety stops typically conducted in the shallower sections of the site, allowing for continued macro observation while off-gassing. Buoyancy control is paramount throughout the dive to avoid disturbing the silty substrate.

Underwater photography

Jahir, like most sites in Lembeh, is a prime location for macro photography, both day and night. For daytime dives, the volcanic black sand provides a neutral, high-contrast background that makes colorful subjects pop, requiring careful aperture and shutter speed choices to capture detail. Visibility at Jahir is often good, aiding in subject isolation. For night photography, external light sources like snoots or focus lights are invaluable for highlighting nocturnal critters such as blue-ringed octopuses or bobbit worms. Precision buoyancy is crucial to avoid stirring up the silt and ensure clear shots. Divers should use a macro lens (e.g., 60mm or 100/105mm) for tiny subjects, often paired with strobes to illuminate subjects and manage ambient light. Patience is key; dedicating time to a single subject often yields the best results. Given the delicate nature of many subjects, photographers must maintain respectful distances and avoid harassing marine life for the perfect shot.

Combine with nearby dive sites

• Hairball

  Iconic muck site for frogfish and cephalopods

• Nudi Falls

  Mini wall and rubble zone with abundant nudibranchs and ribbon eels

• Teluk Kambahu

  Three connected classic black sand slopes for rare octopuses and pipefish

• Angel Window

  Pinnacle with a swim-through, offering a break from muck diving

• Police Pier

  Popular night dive site known for snake eels, scorpionfish, and crustaceans

• Makawide

  Three sites between boulders, protected from waves and current

Getting there & logistics

Access to Jahir and other Lembeh Strait dive sites is almost exclusively via land-based dive resorts, as liveaboards rarely operate within the strait itself. Divers typically fly into Manado (MDC) airport in North Sulawesi, followed by a transfer to the Bitung area and then a short boat ride or land transfer to their chosen resort on Lembeh Island or the mainland. Dive trips are usually run multiple times a day from these resorts, including night dives, with sites often less than 15 minutes away. Resort packages typically cover marine park fees, accommodation, meals, and guided dives, sometimes offering dedicated photo facilities. Bookings for peak season (July-October) should be made 3-6 months in advance, especially for specialized macro photo trips with private guides.

Safety & environment

While diving in Lembeh is generally considered safe, especially with the gentle currents at sites like Jahir, divers should prioritize good buoyancy control to avoid damaging the silty bottom and ensure clear visibility. The nearest recompression chamber is located in Manado, approximately 1.5 to 2 hours drive from the Lembeh Strait, highlighting the importance of dive accident insurance covering medical evacuation and treatment. Site-specific hazards are minimal, but divers should be aware of potentially venomous critters like stonefish or scorpionfish, which are well-camouflaged; never touch marine life. Guides are trained in critter etiquette, promoting low-impact diving practices. Divers are advised to adhere strictly to dive plans, monitor air consumption, and maintain adequate surface interval times.

Who it suits, and who it doesn't

FAQ

Jahir FAQ

Liveaboards diving Jahir

These liveaboards may visit Jahir on selected itineraries, the exact dive sites depend on departure, weather and conditions.

Panunee

Indonesia

18 guests38 m

Naga Biru

Indonesia

12 guests40 m

Ecopro Duyung Baru

Indonesia

6 guests27 m

Jaya

Indonesia

14 guests23 m

Wellenreng

Indonesia

9 guests25 m

Komodo Aggressor

Komodo, Indonesia

16 guests29 m

Blue Manta

Indonesia

20 guests45 m

Mari

Indonesia

14 guests32 m

Situju7

Komodo, Indonesia

10 guests33 m

Pindito

Indonesia

16 guests38 m

Mermaid II

Komodo, Indonesia

18 guests

Pearl of Papua

Raja Ampat, Indonesia

14 guests30 m