Bastianos Froggies Lembeh Dive Resort

Bastianos Froggies Lembeh Dive Resort sits on the west coast of Lembeh Island, looking across the Lembeh Strait, which is the best muck diving in the world. The rooms are traditional wooden cottages with Western-style bathrooms and hot water.

Lembeh Island sits across from Bitung, Northern Sulawesi’s second-largest city, and is known for its rich marine biodiversity. The Bastianos Divers team are local guides with a rare eye for the critters Lembeh is known for. The resort suits serious divers and anyone who just wants a quiet week.

The Accommodation

Superior Beachfront or Hillside

This room comes in hillside or beachfront positions, each with a private verandah. All have a private bathroom with hot and cold water, a Western-style toilet and air conditioning.

Standard Room Hillside

The Standard Hillside rooms with AC sit in bungalows, each with an en-suite bathroom, a hot shower and a Western-style toilet.

Extraordinary Muck Diving at Bastianos Lembeh Resort

The Muck Diving Capital of the World

Bastianos Froggies Lembeh Dive Resort sits on Lembeh Island directly across from the port city of Bitung, which puts the Lembeh Strait on its doorstep. This narrow channel between Lembeh Island and mainland North Sulawesi holds the strangest and most photogenic marine life anywhere, and underwater photographers work their way here sooner or later.

The magic of Lembeh lies in its unique underwater topography: dark volcanic sand and sediment that creates the perfect habitat for rare and exotic critters. Larry Smith opened it up in the early 1990s, brought the term “muck diving” into the language, and made the Lembeh Strait the reference point for macro.

Diving in Lembeh Strait: what to expect

This is not reef diving. What you come for is hiding in the sandy slopes and the debris on the bottom. Dives are slow and methodical, usually between 5 and 25 metres, with mild currents and easy conditions, so all your attention goes on finding and photographing things.

Visibility runs from 5 to 15 metres. That sounds poor next to a reef destination, but it is more than enough for macro, and the dark substrate makes camouflaged species easier to pick out. The water temperature remains comfortable year-round, averaging 27-29°C (80-84°F).

What sets Lembeh apart is the density of rare species. On a single dive you might find several kinds of frogfish, ghost pipefish, mimic octopus, flamboyant cuttlefish, nudibranchs, seahorses, scorpionfish and a long list of shrimps and crabs. Many of them are found nowhere else, or are very hard to spot anywhere else.

Beyond Muck: The Complete Lembeh Experience

While famous for its muck diving, Lembeh offers surprising variety beyond the black sand sites. The resort’s strategic location allows access to a range of diverse environments:

• The Other Side: Lembeh also has coral reefs on the eastern side of the island, with clearer water and plenty of fish. They make a good change from the muck sites.
• Wreck Diving: Several fascinating wrecks lie within easy reach, including cargo ships and World War II remnants that have become artificial reefs teeming with life.
• Mandarin Fish Dives: late afternoon dives to watch the mating ritual of mandarin fish, which happens like clockwork at dusk.
• Night Diving: Lembeh transforms completely after dark, with many creatures becoming more active and visible. Night dives reveal an entirely different ecosystem and are considered essential for the complete Lembeh experience.

Professional Dive Operation

Bastianos Divers, a PADI-affiliated center since 2004 (R-34063), brings decades of collective experience to Lembeh’s waters. The guides come from Manado and the surrounding area, and their ability to pick out camouflaged animals is something they call “magic eyes”.

The resort maintains a structured daily dive schedule:

• Morning: Two dives departing at 8:00 AM with a one-hour surface interval
• Afternoon: Single dive at 2:30 PM
• Special dives: Mandarin fish dive at 4:45 PM or night dive at 5:30 PM

Notably, Lembeh diving follows a slightly different protocol than other locations. Because of the way critter hunting and macro photography work, bottom times run on air consumption rather than a fixed limit. Getting the shot sometimes takes a while.

Underwater Photography Focus

Bastianos Froggies Lembeh has built out its facilities for underwater photographers:

• A purpose-built camera room with workbenches and charging stations
• Fresh water rinse tanks specifically for camera equipment on boats
• Special underwater photography workshops led by resident photographer Barney Seier
• Guides trained specifically in understanding photographers’ needs, including proper positioning and lighting assistance

For beginners looking to capture the incredible marine life, the resort offers entry-level underwater photography classes and equipment rental, making this specialized activity accessible to all guests regardless of experience level.

Learning to Dive in Lembeh

The calm, protected waters of Lembeh Strait create an ideal environment for dive training. Bastianos offers a complete range of PADI courses from introductory experiences to professional-level training:

• Bubble Maker (from age 8) and Discover Scuba Diving provide first-time experiences
• Open Water and Advanced Open Water certification courses
• Specialized courses including Digital Underwater Photography, Enriched Air Nitrox, and Night Diver
• Conservation-focused courses like Coral Reef Conservation and Dive Against Debris
• Professional Divemaster training for those looking to begin a career in diving

The relatively mild conditions, minimal currents, and shallow dive profiles make Lembeh particularly suitable for new divers, while the extraordinary marine life ensures even training dives become memorable wildlife encounters.

Beyond Diving Activities

Understanding that even the most dedicated divers occasionally need a break, Bastianos offers several enriching land-based activities:

• Tangkoko Nature Reserve: Just a short drive away, this protected jungle is home to the endemic spectral tarsier (one of the world’s smallest primates), black macaques, and diverse bird species including the impressive hornbill. Watch our video here
• Minahasa Highlands Tour: Explore volcanic lakes, traditional villages, and ancient stone tombs while experiencing the unique culture of North Sulawesi’s highlands.
• Lembeh Island Exploration: Discover the charming villages and scenic viewpoints of Lembeh Island itself through guided walking tours.
• Indonesian Cooking Classes: Learn to prepare traditional North Sulawesi dishes under the guidance of the resort’s chef.

These activities complement the diving experience and provide a more complete understanding of North Sulawesi’s natural and cultural richness.