Dive Site: Siaba Besar

About Siaba Besar

Siaba Besar, affectionately known as "Turtle City," is a sheltered dive site located in a protected bay within the central region of Komodo National Park. Its calm surface conditions and gentle to moderate underwater currents make it an ideal introductory experience to Komodo's rich marine environment, contrasting with the park's more challenging, current-swept pinnacles. The site is a popular choice for divers seeking vibrant coral and diverse marine life without the intensity of stronger currents. The topography features gentle slopes, sandy patches, and coral bommies that create a mosaic of habitats. Recreational depths typically range from 12 to 18 meters for certified divers, with introductory programs often staying shallower, around 12 meters or less. The reef crest is shallow, ensuring plenty of visual interest even during shorter dives. Green and hawksbill turtles are frequently sighted, resting on corals, feeding, or ascending for air, justifying the site's nickname. Divers can also spot frogfish camouflaged against sponges, a variety of nudibranchs and small slugs along the slopes, and reef fish like fusiliers, butterflyfish, and angelfish. While large pelagics are not the primary draw, Siaba Besar consistently delivers a rich Indo-Pacific reef ecosystem. Conditions are generally mild, making it suitable for refresh dives, initial dives after travel, and Discover Scuba Diving experiences. However, occasional stronger currents can occur during tidal changes, so adhering to guide instructions is crucial for a safe and enjoyable dive.

Dive site facts: Siaba Besar

Depth

5–18 m

Typical dive

12–18 m, 50–60 min

Current

Typically mild

Visibility

10–25 m

Water temperature

24–29°C

Entry

Liveaboard / resort boat

Level

Beginner, Open Water certified

Dive type

Macro, reef, gentle slope, drift

Night dive

Possible

Region / port

Central Komodo

Coordinates

-8.485, 119.564

Conditions & Currents

Siaba Besar is celebrated for its typically mild currents, making it an excellent choice for divers who prefer relaxed conditions or are looking to build confidence. While most of Komodo is known for its strong, unpredictable currents, Siaba Besar's sheltered location provides a significant contrast. Divers can expect gentle drift dives along coral gardens and sandy bottoms, allowing ample time for observation and photography. This site is particularly suitable for skills practice, as the calm environment reduces the challenges associated with stronger water movement. Visibility generally ranges from 10 to 25 meters, providing clear views of the abundant marine life. Water temperatures are comfortably warm, usually between 24–29°C.

Marine life & sighting chances

Green turtle

common

Hawksbill turtle

common

Frogfish

common

Seahorse

common

Nudibranchs

common

Blue-ringed octopus

occasional

Leaf scorpionfish

common

Pipefish

common

Coral shrimp

common

Mantis shrimp

occasional

Garden eels

common

Clownfish

common

Ornate ghost pipefish

occasional

Flamboyant cuttlefish

occasional

Dive profile & how the dive runs

Dives at Siaba Besar typically commence in the shallows, allowing divers to perfect buoyancy and trim before exploring further. The usual route involves fanning out along the reef's gentle slope, which features a mix of hard coral gardens and isolated coral bommies set against sandy patches. Divers move slowly, scanning for macro life such as frogfish, seahorses, pipefish, and nudibranchs hidden within the reef structures. Green and hawksbill turtles are often encountered resting on the corals. The dive progresses along the slope, gradually reaching depths up to 18 meters, where garden eels can be observed. The relatively calm conditions and generous bottom times allow for thorough exploration before ascending for a safety stop, often in the protected shallows, rich with small critters.

Underwater photography

Siaba Besar is an exceptional site for underwater photography, particularly for macro enthusiasts. The mild currents and accessible depths, typically between 5 and 18 meters, allow for extended bottom times and patient observation of subjects. A macro lens is highly recommended to capture the intricate details of frogfish, seahorses, pipefish, and the dozens of nudibranch species found here. For wide-angle opportunities, focus on the resident green and hawksbill turtles and the vibrant coral bommies. Strong external strobes are beneficial to bring out the true colors of the corals and cryptic critters, especially in shallower areas where natural light is abundant. Divers should maintain excellent buoyancy to avoid disturbing the sandy bottom or fragile reef, ensuring pristine conditions for shots.

Combine with nearby dive sites

• Sebayur Kecil

  A sloping reef site, also great for beginners and macro life.

• Mawan

  Offers a mix of large inhabitants and macro life, including manta cleaning stations.

• Tatawa Besar

  Known for colorful reefs and often gentle drift dives.

• Pink Beach

  A popular stop for snorkeling and land excursions, often combined with dives.

• Manta Point (South)

  Guaranteed manta ray encounters during peak season, located further south.

Getting there & logistics

Access to Siaba Besar is primarily via liveaboards or day boats departing from Labuan Bajo, the main hub for Komodo National Park. Labuan Bajo is served by Komodo Airport (LBJ), with frequent domestic flights from Bali (DPS). Typical dive trips range from one-day excursions focusing on central Komodo to multi-day liveaboard itineraries exploring the wider park. Permits for Komodo National Park are mandatory and are usually arranged by dive operators, covering entrance fees for both the park and diving activities. Siaba Besar is frequently integrated into itineraries as a calm, critter-rich contrast to more current-exposed sites, often paired with nearby locations like Sebayur Kecil or Tatawa Besar.

Safety & environment

Diving in Komodo National Park, including Siaba Besar, requires adherence to standard safety protocols. While Siaba Besar is known for its mild currents, divers should always follow their guide's instructions and maintain good buddy contact. The nearest recompression chamber is located in Bali, emphasizing the importance of conservative dive planning and adequate dive insurance that covers emergency evacuation and medical treatment. All divers should be Open Water certified, and those with current experience will find it beneficial across the region. Always respect marine life by maintaining a safe distance, especially from resting turtles, and avoid touching corals or creatures to preserve the delicate ecosystem.

Who it suits — and who it doesn't

FAQ

Siaba Besar FAQ

Liveaboards diving Siaba Besar

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

Naga Biru

Indonesia

12 guests40 m

$273/day

Ecopro Duyung Baru

Indonesia

6 guests27 m

$361/day

Wellenreng

Indonesia

9 guests25 m

$427/day

Komodo Aggressor

Komodo, Indonesia

16 guests29 m

$312/day

Blue Manta

Indonesia

20 guests45 m

$482/day

Mari

Indonesia

14 guests32.2 m

$328/day

Situju7

Komodo, Indonesia

10 guests32.7 m

$362/day

Pindito

Indonesia

16 guests37.79 m

$533/day

Mermaid II

Komodo, Indonesia

18 guests

$391/day

Putri Naga

Komodo, Indonesia

6 guests25 m

Mikumba Dua

Indonesia

10 guests30 m

$335/day

Aliikai Voyage

Indonesia

15 guests40 m

$658/day