Labuan Marine Park is one of those rare places where history and nature have merged into something extraordinary. Four shipwrecks — spanning decades of maritime drama from World War II to Cold War-era commerce — now serve as artificial reefs, hosting an explosion of marine life in the warm waters of the South China Sea. Around them, the coral reefs of Rusukan Besar and Rusukan Kecil sustain one of Borneo's most accessible marine ecosystems, where sea turtles glide over coral heads, schools of batfish shimmer in the current, and the macro life tucked into every crevice keeps underwater photographers coming back year after year.
The Marine Park Ecosystem
Labuan Marine Park encompasses the waters and coral reefs surrounding three islands to the south of Labuan's main island: Pulau Rusukan Besar (Big Rusukan), Pulau Rusukan Kecil (Small Rusukan), and Pulau Kuraman. Established to protect the area's rich marine biodiversity and historic shipwrecks, the park represents one of the most significant marine conservation areas in northern Borneo.
What makes this marine park exceptional is the convergence of natural and man-made reef systems. The original coral reefs around the islands have been here for millennia, shaped by warm equatorial currents and the nutrient-rich waters where the South China Sea meets Brunei Bay. Layered atop these natural formations are four shipwrecks that have become artificial reefs in their own right — steel hulls encrusted with hard and soft corals, creating complex vertical structures that attract an extraordinary density and diversity of marine life.
The combination means that within a compact area, divers and snorkellers can experience everything from shallow coral gardens teeming with reef fish to dramatic deepwater wreck penetrations surrounded by pelagic species — all in a single day's diving.
The Four Legendary Shipwrecks
Labuan's wreck sites are the headline attraction, and rightfully so. Each wreck has its own character, history, and marine ecosystem, and together they form one of Southeast Asia's most concentrated wreck diving destinations. For a detailed practical dive guide including operator recommendations and equipment specifics, see our Diving & Marine page — here, we focus on the wrecks as living marine habitats.
The most accessible of Labuan's wrecks, this Philippine cargo freighter sank while carrying a load of cement in the 1980s. Its relatively shallow depth and upright position make it ideal for newer divers, but don't mistake accessibility for lack of interest. After four decades on the seabed, the Cement Wreck has developed some of the richest coral encrustation of any of Labuan's wrecks. The hull is draped in soft corals, sea fans, and sponges, creating a living tapestry of colour that extends from the deck rails to the seabed. Resident species include lionfish tucked into alcoves, nudibranchs on the hull plates, schools of fusiliers swirling above the superstructure, and the occasional giant moray eel peering from the cargo hold.
Because the wreck sits upright and relatively intact, it also offers excellent opportunities for controlled wreck penetration. The wheelhouse and upper decks are open and accessible, providing that atmospheric feeling of exploring a sunken vessel while remaining within easy reach of open water.
Named for the exceptional water clarity that often surrounds it, the Blue Water Wreck is a medium-sized cargo vessel of uncertain origin resting on its side. The listing angle creates an interesting topography — what were once vertical walls are now accessible slopes, and the mast and rigging reach out into the blue water like skeletal fingers draped in soft coral.
This wreck is famous among Labuan divers for its resident population of tall-finned batfish, which gather in languid schools around the superstructure, apparently unbothered by approaching divers. Lionfish are abundant, perching on coral-crusted railings with their venomous fins fanned wide. The soft coral growth here is spectacular — plump dendronephthya corals in pink, orange, and purple cluster on every available surface, making the Blue Water Wreck one of the most photogenic dive sites in the park. Look carefully in the crevices and you'll find ribbon eels, banded coral shrimp, and a variety of nudibranchs that draw macro photography enthusiasts.
The most historically significant of Labuan's wrecks, the USS Salute was an Admirable-class minesweeper of the United States Navy. On 8 June 1945 — just months before the end of World War II — the vessel struck a Japanese mine while clearing the approaches to Brunei Bay in advance of the Allied liberation of Borneo. The explosion sank the Salute within minutes, and her remains now rest on the seabed as both a war grave and a thriving marine habitat.
The wreck's naval construction — heavier steel, more complex internal structures — has created a labyrinth of swim-throughs and penetration opportunities for experienced divers. The hull has attracted hard coral colonies that have had nearly 80 years to establish, and the structure acts as a gathering point for larger species. Barracuda, trevally, and grouper are regularly sighted, and during the right season, eagle rays cruise past the wreckage. The emotional weight of diving a WWII war grave adds a dimension that purely recreational wreck sites cannot match — this is underwater heritage in the truest sense.
The deepest and most challenging of Labuan's wreck sites, the MV Tung Hwang — nicknamed the Australian Wreck due to ties to Australian salvage history — rests at depths that put it firmly in the domain of experienced, deep-certified divers. The greater depth limits bottom time but rewards those who reach it with exceptional visibility, less diver traffic, and marine life that gravitates toward the deeper water column.
Large grouper, Napoleon wrasse, and schools of jacks are more commonly encountered here than on the shallower wrecks. The wreck itself is in remarkably good condition for its depth, with identifiable structural features and cargo holds that can be explored with proper training and equipment. Because fewer divers reach this site, the coral growth is largely undisturbed — a pristine time capsule of marine colonisation.
Coral Reef Ecosystems
Beyond the wrecks, Labuan Marine Park protects extensive natural coral reef systems around Pulau Rusukan Besar and Pulau Rusukan Kecil. These fringing reefs are characterised by a mix of hard corals — including massive Porites boulders, branching Acropora thickets, and table corals — interspersed with colourful soft corals, sea fans, and barrel sponges.
The reefs around Rusukan Besar are generally in good health, benefiting from the marine park's protection against destructive fishing practices and coral harvesting. Reef surveys have identified over 100 species of hard coral in the park, a number that places Labuan among the more diverse reef systems in Malaysia's South China Sea waters, though not at the level of the Coral Triangle heartland further south in Sabah's Semporna archipelago.
What Labuan's reefs may lack in sheer diversity compared to Sipadan or Mabul, they compensate for with accessibility. The reef tops begin at just 2–3 metres below the surface, making them ideal for snorkelling and discover scuba experiences. The proximity to the main island — boat rides of 15–30 minutes — means you can fit reef visits into a half-day itinerary without the long travel commitments that more remote dive destinations require.
Marine Biodiversity
Labuan's marine park supports a diverse array of species that have made these waters their home, drawn by the combination of warm temperatures (28–30°C year-round), abundant food sources, and the complex habitats provided by both natural reefs and artificial wreck structures.
Sea Turtles
Green turtles and hawksbill turtles are regularly sighted in the marine park. They feed on the seagrass beds and sponges around the islands and are occasionally encountered resting under coral overhangs or cruising between dive sites. While Labuan is not a major nesting site, the turtles' presence is a strong indicator of ecosystem health, and encounters during dives are a highlight for many visitors.
Reef Fish Communities
The combination of wreck structures and natural reef creates habitat for a remarkable diversity of reef fish. Clownfish (anemonefish) are abundant on the reef tops, living in symbiosis with large anemones. Parrotfish, surgeonfish, butterflyfish, and angelfish populate the coral gardens. Around the wrecks, you'll encounter larger species — sweetlips, snappers, grouper, and barracuda — that use the complex structures for shelter and ambush hunting.
Macro Life
For underwater photographers focused on the small stuff, Labuan delivers surprisingly well. Nudibranchs in a dazzling array of colours and patterns can be found on wreck surfaces and reef walls. Ghost pipefish, ornate and robust varieties, appear seasonally. Mantis shrimp, porcelain crabs, and various species of commensal shrimp occupy the reef crevices. The wrecks, with their mix of hard substrate and soft coral gardens, are particularly rich in macro subjects.
Snorkelling in the Marine Park
You don't need a dive certification to experience Labuan's marine world. The shallow reef tops around Rusukan Besar and Rusukan Kecil offer excellent snorkelling, with clear water, minimal current, and reef life that starts just below the surface.
The best snorkelling spots are on the sheltered sides of the islands, where coral gardens grow to within arm's reach of the surface and schools of colourful fish weave through the formations. On good visibility days, you can see the sandy bottom 10–15 metres below and watch larger fish patrolling the reef edge from the surface.
Snorkelling trips are easily arranged through the Labuan Sea Sports Complex or through dive operators in Victoria. Half-day island-hopping packages typically include snorkelling stops at one or two reef sites, with equipment provided. For non-swimmers who still want a peek beneath the surface, some operators offer glass-bottom boat trips over the reef areas.
Apply reef-safe sunscreen at least 30 minutes before entering the water. Don't touch or stand on coral — even dead-looking branches may be living colonies. A rashguard provides sun protection and helps you avoid the need for excessive sunscreen. Bring an underwater camera — even a basic waterproof case for your phone will capture memorable moments.
Conservation Efforts
The establishment of Labuan Marine Park was a deliberate act of conservation, recognising that the area's shipwrecks, coral reefs, and marine biodiversity required active protection to survive the pressures of development, fishing, and climate change.
Key conservation measures include the prohibition of destructive fishing methods within park boundaries (dynamite fishing, cyanide use, and trawling are strictly banned), restrictions on anchoring over coral reefs (mooring buoys are provided at dive sites), and regulations on the number of divers permitted at each wreck site to prevent physical damage from fin strikes and accidental contact.
Coral restoration projects have been undertaken around Rusukan Besar, using artificial reef structures and transplanted coral fragments to rehabilitate areas damaged by past storms or bleaching events. These restoration efforts are visible on some dive sites, where geometric concrete structures — now well-colonised by new coral growth — sit alongside the natural reef.
Marine park rangers conduct regular reef health surveys, monitoring coral coverage, fish populations, and water quality. The data informs ongoing management decisions and helps identify areas needing intervention. Visitors can support conservation by choosing dive operators who follow responsible diving practices, not collecting shells or marine souvenirs, and reporting any observed violations to park authorities.
Choose reef-safe sunscreen (mineral-based, no oxybenzone or octinoxate). Maintain neutral buoyancy to avoid touching coral. Don't feed fish — it disrupts natural behaviour. Carry a mesh bag and collect any plastic or debris you spot during dives. Support local dive operators who invest in conservation initiatives.
Best Time for Underwater Visibility
Underwater visibility in Labuan Marine Park varies significantly by season, and timing your visit well can make the difference between a good dive trip and an unforgettable one.
| Period | Visibility | Conditions |
|---|---|---|
| March – May | 15–25 metres | Best visibility, calm seas, warmest water (29–30°C). Peak dive season. |
| June – September | 10–18 metres | Good conditions overall, occasional plankton blooms reduce clarity. Manta sightings possible. |
| October – February | 5–12 metres | Wet season reduces visibility. Rougher seas can limit access to outer sites. Wreck dives still possible on calmer days. |
Water temperature remains warm throughout the year (27–30°C), so a 3mm shorty wetsuit or even just a rashguard is sufficient for most divers. The warmest period is March to May, when surface temperatures can reach 30°C.
Planning Your Marine Park Visit
Booking Dive Trips
Several PADI and SSI-affiliated dive operators are based in Victoria and offer daily trips to the marine park. Most operators run morning departures (around 8 AM) and return by early afternoon after two dives. Half-day snorkelling trips to the islands are also available. It's advisable to book at least a day in advance during peak season (March–May), though walk-in availability is usually fine during quieter months. See our Diving & Marine page for operator recommendations and pricing.
Certification Requirements
The Cement Wreck and reef dives are accessible to Open Water-certified divers (or equivalent). The Blue Water Wreck and American Wreck require Advanced Open Water certification due to depth. The Australian Wreck is strictly for Deep Dive-certified divers. If you're not yet certified, several Labuan operators offer PADI Open Water courses that can be completed in 3–4 days, with wreck dives as the thrilling reward at the end.
Equipment
Full rental equipment (BCD, regulator, wetsuit, fins, mask, tank) is available from all dive operators. Experienced divers may prefer to bring their own mask, computer, and regulator for fit and familiarity. Nitrox (enriched air) is available at most operators for divers with the appropriate certification — highly recommended for multi-dive days on the wrecks to extend bottom time and reduce surface intervals.
| Detail | Information |
|---|---|
| Location | Waters around Rusukan Besar, Rusukan Kecil & Kuraman islands |
| Boat Ride | 15–30 minutes from Labuan main island |
| Number of Wrecks | 4 (depths from 10m to 35m) |
| Water Temperature | 27–30°C year-round |
| Best Visibility | March – May (15–25m) |
| Minimum Certification | PADI / SSI Open Water (Cement Wreck & reefs) |
| Nitrox Available | Yes, at most operators |
| Marine Park Fee | Included in most dive packages |
Safety Guidelines & Regulations
The marine park operates under clear regulations designed to protect both visitors and the environment. All divers must dive with a licensed operator — solo or independent diving within the park is not permitted. Spearfishing, shell collection, and coral harvesting are strictly prohibited. Feeding fish is discouraged as it alters natural behaviour patterns.
For wreck diving specifically, penetration beyond natural light zones should only be attempted by divers with wreck diving specialty certifications and appropriate equipment (reels, lights, redundant air). The USS Salute is a war grave, and divers are expected to show appropriate respect — no removing artefacts, no disturbing the wreck structure.
Basic safety practices — including pre-dive buddy checks, maintaining contact with your guide, monitoring air supply and no-decompression limits, and performing safety stops at 5 metres — are enforced by all reputable operators. If conditions are poor (low visibility, strong currents), operators will redirect to more sheltered sites rather than risk diver safety.
Dive Into Labuan's Underwater World
Whether you're a certified wreck diver or a first-time snorkeller, Labuan's marine park has an underwater experience waiting for you.
Plan Your Visit