Tubbataha Reef: how to dive the Philippines' remote Sulu Sea park

What and where Tubbataha Reef is

Tubbataha Reefs Natural Park lies almost in the center of the Sulu Sea, about 93 miles (150 km) southeast of Puerto Princesa. It is made up of two large atolls, the North Atoll and the South Atoll, plus the much smaller Jessie Beazley Reef to the north, and covers nearly 97,000 hectares (about 375 square miles) of reef and open sea that UNESCO says averages around 2,500 ft (750 m) deep between the reefs. It belongs to Cagayancillo, a remote island municipality of Palawan province, which receives a share of the park's fees for local livelihood projects.

UNESCO inscribed Tubbataha as a World Heritage Site in 1993 and approved an extension of its boundaries in 2009. No one lives there apart from the park rangers, fishing is banned throughout, and there are no hotels, airstrips or day trips. Visitors can enter only aboard the dive liveaboards permitted by the Tubbataha Management Office (TMO), which runs the park and lists the accredited boats on its website.

When to go: the short Tubbataha dive season

The Sulu Sea is reliably calm enough for the open-water crossing only in the gap between the two monsoons, so the season is short. Most boats run from about mid-March to mid-June, and the park's own 2024 tourism report shows the outer limits: the first boat entered on February 20 and the last left on July 29, after 217 trips carrying 3,686 visitors. Outside that window the liveaboards do not run, although the rangers stay on duty all year.

As of October 2026 the TMO has not published dates for the 2027 season, but operators are already selling departures from March 2027, and the usual March-to-June pattern is expected again. Operators generally describe April and May as the calmest months; by June the southwest monsoon is building and late-season crossings can be rougher. For the seasons on land, see our Palawan weather guide.

Tubbataha liveaboard trips: how they work and what they cost

About a dozen boats hold permits, from simple wooden dive boats to steel motor yachts. Trips leave from Puerto Princesa and usually last four to seven nights. The park puts the crossing at about 10-12 hours and some operators allow 12-16, so boats sail in the afternoon and reach the reef the next morning. A six-night trip typically gives four full dive days with up to four dives a day, and a few boats combine Tubbataha with other areas on longer itineraries.

Prices depend on the boat and the cabin. Reported fares run from roughly $2,000 per person for a short trip on a simpler boat to $4,000-5,000 or more for six nights on a premium yacht, usually including the cabin, meals, tanks and the scheduled dives. Park and port fees, nitrox, rental gear, alcohol, crew tips and flights are generally extra. Our Palawan trip cost guide puts these figures alongside the rest of a Palawan budget.

With limited berths and a three-month season, popular dates sell out early, so book six to twelve months ahead, and earlier still for April or a particular cabin. Before paying, ask how the operator handles a departure canceled by the coast guard for bad weather, and whether a deposit becomes a credit or a refund.

Park fees, permits and the rules underwater

Every visitor pays a conservation fee before the TMO issues an entry permit. The park's published rate is ₱5,000 (about $87) per visitor and ₱500 (about $9) for working divemasters, with children aged 12 and under exempt; the boat pays a separate vessel fee by tonnage. Operators usually collect it together with port charges, sometimes quoted in dollars and added to your onboard bill, and warn that the amount can change without notice. Each guest also completes a Visitor Entry Permit application through the boat before departure.

Before the boat leaves Puerto Princesa, TMO staff brief the guests on park rules and the coast guard inspects the vessel. Under the park regulations, the islets of both atolls, the cay on Jessie Beazley Reef and all sandbars are off limits, except the sandbar at the ranger station; anchoring is forbidden; and damaging coral brings fines plus restoration costs of at least ₱12,000 (about $210) per square meter. Operators' briefings add the rules divers notice most: no gloves without a medical certificate, no reef hooks or tank bangers, dives of 60 minutes at most, no night dives, no drones without a permit and no single-use plastics on board.

The ranger station stands on a sandbar on the North Atoll. It is staffed year-round by teams from the Philippine Navy, the Philippine Coast Guard, the municipality of Cagayancillo and the TMO on two-month rotations, and many trips include a short visit to meet the rangers and hear how they patrol the park.

Who can dive Tubbataha: experience and insurance

Tubbataha is not a place to learn. The reefs are exposed, most dives are drifts along walls that drop past 330 ft (100 m), and currents can change from gentle to very strong, especially around the new and full moon. Operators set their own minimums: one major fleet requires Advanced Open Water certification with at least 50 logged dives and experience in strong currents, while others ask for around 30 dives. A dive computer is compulsory and a surface marker buoy is strongly advised. Some boats accept non-diving companions, but snorkeling at the reefs is generally not offered and no one may go ashore.

Help is a long way off. Operators require insurance that covers scuba diving and emergency evacuation, and recommend a dive-specific policy. There is a hyperbaric chamber at Ospital ng Palawan in Puerto Princesa, with others in Manila, Cebu and Batangas, and getting there from the reef can mean a long sea passage or a private air evacuation. The UK Foreign Office advises checking a dive operator's credentials and that oxygen is carried on board, and both the US and UK governments warn of kidnapping and piracy risks in the Sulu Sea region; read the current advisories and confirm your policy covers the trip. Our Palawan safety guide covers the advisories and health basics.

What you see: sharks, turtles, mantas and walls

The signature scenery is the walls: shallow reef tops covered in hard coral that fall vertically into deep blue water, hung with large sea fans, barrel sponges and whip corals. UNESCO counts about 360 coral species, almost 90% of those found in the Philippines, and an estimated 700 species of fish. Visibility is often 50-100 ft (15-30 m) and the water is around 79-84 °F (26-29 °C), so most divers wear a 3 mm or 5 mm wetsuit.

Sharks are the headline. UNESCO notes that the park supports the highest known population densities of whitetip reef sharks in the world, grey reef sharks patrol the walls, and at the site called Shark Airport whitetips rest on a sandy plateau like planes on a runway. Hammerheads, tiger sharks, whale sharks and manta rays turn up on some trips but are never guaranteed. Green and hawksbill turtles nest and feed on the atolls and are commonly seen grazing on the reef, along with schools of jacks, barracuda and snappers, Napoleon wrasse and dogtooth tuna.

Above water, Bird Islet and South Islet hold breeding colonies of seabirds, and in 2025 park researchers recorded the Cocos booby nesting there for the first time in the Philippines. The islets are closed to visitors, so you watch the birds from the boat.

Puerto Princesa logistics and the Coron alternative

Fly into Puerto Princesa (PPS) at least a day before departure: boats typically meet guests at a hotel or the Baywalk pier around midday and sail in the afternoon after the TMO briefing, and a late arrival cannot catch up with the boat. Our guide to getting around Palawan covers flights, and the Puerto Princesa guide explains where to stay in the city. On the way back, boats usually dock in mid-morning, and at least one major operator asks for 24 hours between your last dive and your flight, so do not book an early flight home.

That no-fly day suits a trip on land or on the surface: the Underground River is a full day from the city and needs a permit arranged in advance, and Honda Bay is a gentle island-hopping day close to town. If your dates fall outside the March-June window, Coron is the dive alternative, with Japanese wrecks sunk in 1944 that can be dived all year; see our Coron wreck diving guide and the wider list of Palawan tours.