Scuba Diving in Derawan Islands

Diving in Derawan Islands

Diving in Derawan Islands drops you into one of Indonesia's richest big-animal destinations without the crowds you'll find in Raja Ampat or Komodo. The archipelago sits off the east coast of Borneo in the Sulawesi Sea, spread across four main dive islands: Derawan, Sangalaki, Kakaban, and Maratua. Each one plays a different role. Sangalaki is the manta ray magnet. Kakaban wraps a stingless jellyfish lake inside a steep-walled island ringed with sharks and schooling fish. Maratua is the pelagic powerhouse, with a single tidal channel that funnels barracuda, reef sharks, and the occasional hammerhead into tornado-sized aggregations. Derawan Island itself is the macro playground, home to seahorses, flamboyant cuttlefish, and blue-ringed octopus on shallow reefs just off the jetty.

The diving here runs warm and forgiving on temperature, with water sitting at 27–29 °C (81–84 °F) year-round. A 3 mm wetsuit or a rash guard is plenty. Visibility typically runs 15–25 m at Sangalaki and Kakaban and pushes past 30 m at Maratua's outer reefs. The big variable is current, especially at Maratua and around Kakaban's drop-offs, where incoming tides deliver the big-fish action but demand reef hooks and solid buoyancy.

Logistics are more involved than a typical Indonesian dive trip. You'll fly to Berau (BEJ) or directly to Maratua (RTU), then take a boat transfer between 45 minutes and 3 hours depending on your base. Most divers stay at a resort on Derawan, Sangalaki, or Maratua and dive from day boats. A growing number of liveaboards run dedicated Derawan itineraries from Tarakan or Berau. The payoff for the extra travel is a sparse dive-boat scene: you can have Barracuda Point largely to yourself in a way that's harder to pull off at Indonesia's more famous spots.

Top dive sites in Derawan Islands

The top dive sites in Derawan Islands are spread across the archipelago's four main islands, and a proper trip rotates through at least three of them. Here are the five sites most divers come for.

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Barracuda Point, Kakaban

Drop in on the reef edge and work your way along the wall as the current picks up. Around the corner you'll meet the school: thousands of chevron barracuda packed into a slow-moving tornado, close enough that you can track their eyes tracking you. Grey reef sharks cruise the blue behind them. Big dogtooth tuna, jacks, and snappers push in behind the barracuda, and if you keep your head on a swivel you might spot a thresher or a lone hammerhead on the deeper side. The current is real, so bring a reef hook and stay close to your guide.

Depth: 10–25 m (33–82 ft) | Visibility: 20–25 m (65–82 ft) | Current: Moderate to strong | Level: Advanced Open Water Key species: Chevron barracuda, grey reef shark, dogtooth tuna, giant trevally

Big Fish Country / The Channel, Maratua

This is Maratua's signature dive, run only on the incoming tide when the island's single reef channel pulls the ocean's pantry inside. You'll drift through the pass at 20–30 m with eagle rays fanning overhead, grey reef sharks stacked along the wall, and one of the largest resident schools of barracuda in Southeast Asia spinning above the sand. Whale sharks, mantas, and the occasional hammerhead show up in season. The current is strong, the dive is usually the first of the day to catch the tide, and operators generally want you at 100+ logged dives before you roll in.

Depth: 20–30 m (65–98 ft) | Visibility: 25–30+ m (82–98+ ft) | Current: Strong | Level: Advanced (100+ dives recommended) Key species: Chevron barracuda, grey reef shark, eagle ray, manta ray, hammerhead (seasonal)

Manta Point / Manta Avenue, Sangalaki

Sangalaki's east coast is lined with reef manta cleaning stations, and Manta Point (also called Manta Avenue) is the best known. You'll descend onto a coral plateau around 10–15 m, set a reef hook on the rubble, and watch as reef mantas loop overhead in the cleaning current. Peak dives bring 20–50 individuals. Broadclub cuttlefish and hawksbill turtles are common side encounters. The current can push hard, so this is reef-hook diving, and comfortable hovering mid-water is a must.

Depth: 10–20 m (33–65 ft) | Visibility: 15–25 m (49–82 ft) | Current: Moderate to strong | Level: Advanced Open Water Key species: Reef manta ray, broadclub cuttlefish, hawksbill turtle, fire goby

Whale Shark Point, Talisayan

A day trip from Maratua to the mainland fishing port of Talisayan, this site is built around the bagans: stationary fishing platforms where juvenile whale sharks come to feed on baitfish scraps. You enter on snorkel or a shallow dive beneath the nets, and 3–6 m juveniles cruise through the plankton clouds at arm's length. It's not a classic reef dive. It's a specific, high-probability encounter. Expect shallow depths and dark water around the nets, and check your operator's ethics around feeding practices before booking.

Depth: 3–10 m (10–33 ft) | Visibility: 5–15 m (16–49 ft) | Current: Gentle | Level: All levels (snorkel-friendly) Key species: Whale shark (juvenile), trevally, baitfish schools

Derawan House Reef, Derawan Island

Right off the jetty at Derawan Island, the house reef is the archipelago's macro playground. Visibility runs lower here because of the Berau River outflow, but the critter list makes up for it. You'll find seahorses tucked into seagrass, flamboyant cuttlefish hunting in the sand, ghost pipefish drifting near soft corals, and if you get lucky, the small but unmistakable blue-ringed octopus. Green turtles also pass through the reef regularly. Easy access makes this an ideal dusk or night dive.

Depth: 5–18 m (16–59 ft) | Visibility: 8–15 m (26–49 ft) | Current: Gentle | Level: All Levels Key species: Seahorse, flamboyant cuttlefish, ghost pipefish, blue-ringed octopus, green turtle

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Best Time to Dive

The best time to dive Derawan Islands is the dry season from March through October, with the sweet spot falling between June and mid-August when seas are calmest and visibility hits its peak. The equatorial location keeps the archipelago divable through most of the year, though January can bring storms strong enough that some Maratua resorts close for maintenance.

If you want the full Derawan experience in a single trip (mantas, whale sharks, barracuda, and turtles all on the menu), aim for late June through August. If macro diving at Derawan Island is your priority, the shoulder months are quieter and the critter hunting is just as good.

Diving Conditions

Diving conditions in Derawan Islands are warm, current-driven, and generally forgiving on visibility at the outer islands.

The main environmental consideration here is current. Most of the signature sites (Big Fish Country, Barracuda Point, Sangalaki's manta stations) are current dives by design. That's what pulls the big animals in. A reef hook, a surface marker buoy, and confident neutral buoyancy go a long way.

Marine Life

Marine life in Derawan Islands is the reason you make the trip. The archipelago sits inside the Coral Triangle and falls within the Berau Marine Protected Area, and the species list punches well above what the remote location suggests.

• Reef mantas (Mobula alfredi): Year-round, especially around Sangalaki's east coast cleaning stations. Reef mantas are the anchor species here. Sangalaki supports a resident population that uses Manta Point, Manta Avenue, Manta Parade, and Manta Run as cleaning stations, and peak dives bring 20–50 animals circling overhead in the current.
• Whale sharks (Rhincodon typus): June to September, especially around Maratua and the Talisayan bagans. Whale sharks show up seasonally at the fishing platforms near Talisayan on the mainland and in the waters around Maratua. The population is mostly juvenile males, 3–6 m in length, feeding on plankton and baitfish scraps.
• Green turtles (Chelonia mydas): Year-round, with peak nesting May to August. Berau is the largest green turtle nesting site in Southeast Asia, with more than 5,000 nesting turtles recorded annually across Sangalaki, Derawan, Semama, Mataha, and Bilang-Bilangan. You'll see them on almost every dive, and the nesting beaches come alive after dark during peak season.
• Stingless jellyfish: Year-round at Kakaban's inland lake (snorkel only). Kakaban's brackish lake holds four species of stingless jellyfish (Aurelia sp., Tripedalia cystophora, Mastigias cf. papua, and Cassiopea ornata) that evolved without predators. It's one of only a handful of such lakes on the planet and strictly snorkel-only. Scuba bubbles and sunscreen damage the population.

Beyond the headliners, expect reef sharks (grey reef, blacktip, leopard), hammerheads and threshers as rare surprises, broadclub cuttlefish, eagle rays, and a strong macro list at Derawan Island that includes flamboyant cuttlefish, blue-ringed octopus, ghost pipefish, and pygmy seahorses. The Derawan Archipelago was declared a Marine Protected Area in 2005, and organizations including WWF-Indonesia and Global Conservation run active patrol and turtle protection programs across the islands.

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Practical Information

Dive Prices

• Fun dives: IDR 1,600,000 – 3,200,000 (approx. USD 100–200) per day of 2–3 dives, depending on site and operator
• Liveaboard: USD 350–700 per day for dedicated Derawan itineraries
• Park/permit fees: Small conservation fees apply at some islands (typically IDR 50,000–100,000 per person). Confirm with your operator.

Getting There

International travelers fly into Jakarta (CGK) or Balikpapan (BPN), then connect to Berau (BEJ) or directly to Maratua (RTU). Batik Air runs a daily direct flight between Jakarta and Berau, departing around 04:45 and landing at 08:15, which is the only way to reach Derawan same-day from an international connection. From Berau, transfers run about 20 minutes by car to the Tanjung Redeb jetty and 2–3 hours by boat to resorts on Derawan Island. Maratua is a 45-minute speedboat ride from Berau or a short hop on the Maratua-direct flight. Liveaboards typically depart from Tarakan or Berau.

The nearest hyperbaric facilities are on mainland Kalimantan and Sulawesi. Evacuation is a multi-hour process involving a boat transfer to Berau and an onward flight, so confirm your operator's emergency plan and carry DAN insurance before you dive.