North Sulawesi: Lembeh, Bunaken & Bangka

The north-eastern tip of Sulawesi packs three very different dive areas around Manado. Bunaken National Marine Park (Bunaken, Siladen, Manado Tua, Mantehage and Nain) is famous for steep coral walls dropping into deep water, with turtles on almost every dive and pelagics in the blue. Across the peninsula, the sheltered Lembeh Strait between Bitung and Lembeh Island is the classic muck-diving destination: black volcanic sand hiding frogfish, mimic octopus, pygmy seahorses and countless nudibranchs, plus a few reefs and WWII wrecks. To the north, Bangka and Talise offer current-swept pinnacles smothered in soft corals.

Facts

• Best season: Year-round. Bunaken and Bangka are best roughly April – October/November (calmer seas, best visibility); Lembeh is productive all year, with critter-rich cooler water around July – September
• Water temperature: About 26–29 °C; Lembeh can drop to 25–26 °C in July–September, Bangka is usually 28–30 °C
• Visibility: Bunaken and Bangka typically 15–25 m (up to 30 m); Lembeh muck sites 5–15 m, up to 25 m on reefs
• Getting there: Fly to Manado Sam Ratulangi (MDC), via Jakarta, Bali or Singapore (check current routes). Bunaken is 30–45 min by boat from Manado; Bitung (Lembeh) is about 1–1.5 h by road; liveaboards embark in Bitung
• Permit / fees: Bunaken National Park entry fee for foreign visitors: IDR 150,000 per person (domestic IDR 10,000/day) per the Ministry of Forestry listing — check the current fee and validity before travel; operators usually arrange the ticket/tag. Lembeh Strait is not a national park
• Currents: Lembeh is sheltered and usually calm, with more current at the northern reef sites; Bunaken walls are mostly gentle drifts with occasional strong or down-currents; Bangka pinnacles can be strong

Season

• Best months: Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
• Acceptable: Nov
• Water temperature: 26–30 °C

The dry season, March to October (April to November for Bunaken per some sources), is best, though diving is possible year-round. In Lembeh July–September has slightly cooler water and more sightings. Calm conditions suit beginners.

Dive sites (45)

Bangka & Talise

• Aer Banua – 30 m, intermediate
• Batu Goso – 5–35 m, intermediate
• Batu Mandi – 5–25 m, intermediate
• Sahaung – 5–35 m, intermediate
• Tanjung Husi – 20 m, advanced
• Yuki Point – 30 m, intermediate

Lembeh Strait

• Air Prang – beginner
• Angel's Window – 1–30 m, intermediate
• Aw Shucks – 28 m, beginner
• Batu Kapal (Lembeh) – 15–27 m, advanced
• Bianca – 28 m, beginner
• Bimoli Wreck – 18–35 m, advanced
• California Dreaming – 40 m, intermediate
• Goby A Crab – 3–27 m, beginner
• Hairball – 30 m, beginner
• Hairball 2 – 27 m, beginner
• Jahir – 1–20 m, beginner
• Kapal Indah – 17–26 m, intermediate
• Kuda Laut – 5–12 m, beginner
• Lembeh Resort House Reef – 25 m, beginner
• Magic Rock – 25 m, beginner
• Mawali Wreck – 15–31 m, intermediate
• Nudi Falls – 1–28 m, beginner
• Nudi Retreat – 1–30 m, beginner
• Pantai Parigi – 25 m, beginner
• Police Pier – beginner
• Pulau Putus – 30 m, intermediate
• Teluk Kembahu – 5–22 m, beginner

Bunaken National Park

• Alung Banua – 20 m, beginner
• Barracuda Point – 30 m, intermediate
• Batu Kapal (Nain) – 40–60 m, advanced
• Bunaken Timur – 40 m, intermediate
• Fukui – 30 m, beginner
• Jalan Masuk – 30 m, intermediate
• Lekuan I – 40 m, beginner
• Lekuan II – 40 m, beginner
• Lekuan III – 40 m, beginner
• Mandolin – 45 m, intermediate
• Muka Kampung – 40 m, intermediate
• Pangalingan – 5–30 m, advanced
• Pangalisang – beginner
• Ron's Point – 40 m, intermediate
• Sachiko's Point – 30 m, intermediate
• Siladen – 35 m, beginner
• Tanjung Kopi – 5–30 m, advanced

Operators (17)

• Lembeh Resort (Critters@Lembeh) – resort, Pintukota, Lembeh Island
• NAD-Lembeh – resort, Lembeh Island
• Dive Into Lembeh – resort, Kasawari Bay, mainland side (northern strait)
• Black Sand Dive Retreat – resort, Kasawari, Bitung (mainland side)
• Divers Lodge Lembeh – resort, South-west tip of Lembeh Island
• Two Fish Divers Lembeh – resort, Lembeh Island (mid-strait bay)
• Two Fish Divers Bunaken – dive centre, Pangulingan beach, east Bunaken
• Siladen Resort & Spa – resort, Siladen Island, Bunaken NP
• Bunaken Oasis Dive Resort & Spa – resort, Bunaken Island
• Murex Manado – resort, Manado (mainland)
• Murex Bangka – resort, Bangka Island
• Coral Eye – resort, Lihunu, Bangka Island
• Lumbalumba Resort – resort, Manado (mainland)
• Cocotinos Manado (Odyssea Divers) – resort, Wori Bay, north of Manado
• Thalassa Dive Resorts (Manado & Lembeh) – resort, North of Manado; second resort on Lembeh
• La Galigo Liveaboard – liveaboard, Bitung (embark)
• Indo Master (Master Liveaboards) – liveaboard, Near Bitung (Lembeh)

Routes (5)

• Passport to Paradise 12 nights (Murex)
• Walls & Muck Safari 7 nights (Two Fish Divers)
• Lembeh day trip from Manado (Murex)
• Bangka, Lembeh & Sangihe 11 nights (La Galigo)
• Lembeh & Sangihe Archipelago 10 nights (Indo Master)

Site positions are approximate unless marked otherwise and are for orientation only — never for navigation. Always dive with a local guide; conditions change with tide and season.