Miri

The Miri-Sibuti Coral Reefs National Park covers 186,930 hectares of the South China Sea. It was gazetted in 2007. The park runs from the Miri coast down to the town of Niah. The lack of nearby islands historically kept these reefs hidden from widespread recreational exploitation. Their isolation has helped preserve the reefs for decades. The offshore environment consists of turbid patch reefs holding massive and encrusting corals. The hard coral cover averages between 22 and 39 percent. The dominant species include Diploastrea, Porites, Montipora, Favites and Pachyseris.

The river sediment helps protect the corals here. Heavy sediment runs off the land down the Baram River basin and into the sea. Decades of deforestation and agricultural land-use changes have increased these sediment loads drastically. The suspended particles lower the visibility but they also provide a physical shield against ultraviolet light. The reduced ultraviolet exposure buffers the coral colonies against severe thermal stress. The reefs here show immense resilience to the bleaching events that hit clearer waters in the region. Scientists from Reef Check Malaysia record bleaching prevalence at just 6.7 percent. Damaged colonies often recover fully within a single year.

Operators run boats to roughly 30 patch reefs.

Eve's Garden Skill level: Open Water | Ave depth: Not specified | Max depth: 12m This shallow reef sits a 10 to 20-minute boat ride from the shore. The seabed is covered in dancing anemones, leather corals and elephant ear sea sponges. Divers frequently spot high numbers of clownfish alongside yellowtail fusiliers and angelfish. Massive bumphead wrasses appear occasionally. The shallow depth makes it an excellent site for beginners and macro photography despite the presence of strong surface currents.

Anemone Garden Skill level: Open Water | Ave depth: Not specified | Max depth: 16m Bubble corals and staghorn colonies frame giant clams and feather stars here. The site takes roughly 20 minutes to reach. The marine life centres around symbiotic relationships. Clownfish and nudibranchs are common. Divers occasionally see mating octopuses and shy sea turtles.

Siwa Reef Skill level: Open Water | Ave depth: Not specified | Max depth: 18m Siwa Reef spans roughly 800 metres. It is the largest contiguous reef in Miri. The underwater landscape features large boulders and undamaged table corals. Guides rely on this site to find leopard sharks and large marble rays. It takes roughly 25 minutes to reach from the mainland.

Sea Fan Garden Skill level: Advanced | Ave depth: Not specified | Max depth: 20m Sprawling gorgonian sea fans and sea whips dominate the environment. The structural growth provides shelter for schooling batfish. It sits about 30 minutes offshore.

Sunday Reef Skill level: Open Water | Ave depth: Not specified | Max depth: 16m Large hard corals hold nudibranchs and clownfish. The site is known for shoals of silvery yellowback fusiliers. Divers also look for the poseur cuttlefish. This cephalopod demonstrates rapid reflective pigment flashing. The boat transit takes 35 minutes.

Nemo City Skill level: Open Water | Ave depth: Variable | Max depth: Variable Wide sea fans spread over colourful anemones and carnation corals. Schools of sharp barracuda frequently zip through the area. They contrast heavily with the macro life below. The boat journey takes approximately 30 minutes.

Batu Belais Skill level: Open Water | Ave depth: Not specified | Max depth: Not specified Gorgonian trees cover this reef heavily. A plenty of batfish navigate through long swaying sea whips. It takes 45 minutes to reach and is very popular for underwater photography.

Grouper Patch Skill level: Open Water | Ave depth: Not specified | Max depth: 18m This prominent rocky outcrop hosts giant groupers and spiny lobsters among hard and soft corals. Yellowtail fusiliers swim above the reef. The boat transit takes roughly 60 minutes.

Tukau Drop-Off Skill level: Advanced | Ave depth: Not specified | Max depth: 45m This remote offshore reef features a vertical wall structure. It is a pelagic zone holding schooling jacks and barracudas alongside Napoleon wrasses. Trumpet fish and sharks pass by occasionally. The depth and conditions demand tight trim and careful buoyancy control. The site sits 50 minutes offshore.

Santak Point Skill level: Advanced | Ave depth: Variable | Max depth: Variable This site is noted for its pelagic encounters. With luck you can swim alongside a fever of stingrays. They navigate the ocean currents together.

The waters off the coast hold several wrecks. These include artificial reefs initiated by the petroleum industry and historical maritime casualties from the Second World War. Divers must maintain good buoyancy control here due to frequent surface and subsurface currents. The river sediment can cause sudden drops in visibility.

Atago Maru Skill level: Open Water / Wreck | Ave depth: Not specified | Max depth: 14m This Second World War Japanese commercial ship rests a short 10 to 15-minute boat ride off the coast of Lutong. It sank in 14 metres of water. Much of the superstructure was visible above the ocean surface originally. Relentless storms and progressive rust degraded the vessel severely. The foremast collapsed in 1981 and the aft mast fell a few years later. The wreck sits upright but heavily broken today. It leans to one side partly buried in silt from the nearby Baram River. Cave corals encrust the structure entirely. It serves as a vital habitat for large moray eels, trevally, jacks and barracudas. Visibility ranges from 20 to 40 metres when conditions allow.

Sri Gadong Skill level: Advanced | Ave depth: Not specified | Max depth: 20m The Sri Gadong is a 30-metre cargo ship resting on a sandy bottom about 60 minutes from the marina. Biological activity teems across the entire structure. Yellow grunts and batfish swim around the hull. Giant groupers shelter in the cargo holds. Jacks circle the wreck continuously.

Kenyalang Wreck Skill level: Advanced | Ave depth: Not specified | Max depth: 25m The Kenyalang Wreck serves as a premier artificial reef. It was created from a decommissioned oil rig known as Baram 8 in a joint rig-to-reef development. The structure lies flat on a sandy bottom. Advanced divers frequently encounter large groupers, snapper and sea snakes around the heavy industrial beams.

All diving in Miri is conducted from boats. Operators depart primarily from the Miri Marina Bay Jetty at approximately 8am every morning. The transit times vary heavily depending on the site. Nearshore wrecks take 10 minutes to reach and the offshore drop-offs require an hour of travel. Several established dive centres operate here. The team briefs every diver on emergency arrangements at booking.

Surface currents in the South China Sea can be exceptionally severe in this region. The swell can be highly disorienting before you descend beneath the surface noise. Motion sickness medication is a sensible precaution for all divers during the boat transits.

The visibility fluctuates depending on the weather and the river runoff. It drops to 10 metres or less on some days. It can clear up to 30 metres when conditions align. Expect green water rather than deep blue. You should plan on a short dive trip.

The Miri diving season runs from late March through November. The weather determines which days you can dive. The entire industry shuts down between December and February to avoid the destructive northeast monsoon. Heavy seas force operator closures during these winter months. Water temperatures drop and visibility plunges well below 10 metres. Recreational diving is unsafe during the closure.

The lingering effects of the northern Pacific monsoon drive water temperatures down to 23 degrees Celsius at depth during March and April. March and April offer the highest probability of encountering migrating whale sharks (Rhincodon typus) and manta rays. These animals are drawn by the nutrient-rich cold upwellings.

The waters stabilise to a warm 29 or 30 degrees Celsius by May. The best window for settled weather runs from April to June and again from August to September. Peak visibility occurs during these months.

If you plan to cross the state border afterwards check when to dive Sabah to match your seasons.

Miri Airport serves as the entry point for the region. Most international visitors fly into Kota Kinabalu first and take a short 50-minute domestic flight across to Miri. You can connect onward from Kota Kinabalu to Tawau in less than an hour if you want to dive the east coast of Sabah afterwards. Road connections link the town to Brunei and the rest of Sarawak.

The town functions as a commercial oil hub. Accommodation consists of mainland hotels rather than island dive resorts. All stays are arranged at enquiry to match your itinerary and flight schedule. Leave 24 hours between your final dive and your flight.

Miri offers very different diving from the famous drop-offs of neighbouring Sabah. Sabah captures the market with clear oceanic water and deep walls at Sipadan. Miri features turbid waters and shallow patch reefs.

The river runoff acts as an ecological sunscreen for the Sarawak corals. This means you dive among highly resilient coral gardens that have survived the regional bleaching events. Miri is a gritty and uncrowded destination. It swaps the sheer walls of Sabah for macro-dense patch reefs and old shipwrecks.

This destination rewards advanced buoyancy control and historical curiosity. It suits divers who already plan to visit Sarawak for the rainforests of Mulu National Park. It makes an excellent addition for Malaysians and expatriates living in Borneo who want a short weekend dive trip. Macro photographers enjoy the shallow reefs very much.

You should choose Sipadan instead if you want clearer blue water and steep walls. Sipadan is the right choice if you want to see oceanic sharks and massive schools of chevron barracuda dropping down a 600-metre wall.

• Kuching and Talang-Satang
• Luconia Shoals
• Labuan
• Kota Kinabalu
• Sarawak Wrecks & Reefs

Send the team your dates and the names of everyone coming to dive. Include your certification level. The team comes back with what can be arranged for your time in Sarawak.