Apo Reef Natural Park

Apo Reef sits in the Mindoro Strait about 30 km west of Sablayan, Occidental Mindoro: not to be confused with Apo Island off Dauin, which is a different place 500 km to the south. It is a roughly triangular atoll of about 34 km2, two lagoons split by a deep channel, with three small islands breaking the surface: Apo Island, Apo Menor (Binangaan) and Cayos del Bajo.

Best time: Mar–May
Certification: Advanced open water
Budget: $–$$ · under $2,000 to $2,000–4,000

Trip length: 3–7 days
Trip style: Liveaboard, Land based, Day trip
Access: Moderate

The short version

Known forA 34 km2 atoll with two lagoons split by a deep channel.

Main tradeoffAccess is the real price.

A large school of silver fish swimming over a dark coral reef

Photo: A. Tlacuilo / Unsplash

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Your outlook

Explore 6 dive sites

Browse the map and wildlife below, or add an optional preference to narrow Apo Reef Natural Park.

Most relevant wildlife

Banded sea kraitJan–Jul, Nov–Dec
Giant trevallyJan–Jul, Nov–Dec
Green sea turtleJan–Jul, Nov–Dec
Whitetip reef sharkJan–Jul, Nov–Dec

Plan the trip

Links coming soon

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6 sites shown.

Conditions referenceSeason, water and visibilityBest Mar–May · Strong current · 25–31°C (coldest Sep, warmest Apr)

Best months Operating Closed / no trips

Current: Strong
Water temperature: 25–31°C (coldest Sep, warmest Apr)
Visibility: 15–40m: Commonly 30-40m in the calm dry-season months, dropping to roughly 15-25m during the June-October habagat.
Experience: Advanced Open Water is the practical minimum.

01 · Marine life

What you may see

rareoccasionalcommonly seenpeak seasondestination closed

Sightings are never guaranteed. The bars show typical likelihood by month.

Giant trevallyCaranx ignobilis

Sighting likelihood by month
Month	Likelihood
January	commonly seen
February	commonly seen
March	commonly seen
April	commonly seen
May	commonly seen
June	commonly seen
July	commonly seen
August	destination closed
September	destination closed
October	destination closed
November	commonly seen
December	commonly seen

Reliable on the current-swept edges: Shark Ridge, Binangaan Drop-off and Apo 29.

Green sea turtleChelonia mydas

Sighting likelihood by month
Month	Likelihood
January	commonly seen
February	commonly seen
March	commonly seen
April	commonly seen
May	commonly seen
June	commonly seen
July	commonly seen
August	destination closed
September	destination closed
October	destination closed
November	commonly seen
December	commonly seen

Resident on the reef and in the lagoons.

Whitetip reef sharkTriaenodon obesus

Sighting likelihood by month
Month	Likelihood
January	commonly seen
February	commonly seen
March	commonly seen
April	commonly seen
May	commonly seen
June	commonly seen
July	commonly seen
August	destination closed
September	destination closed
October	destination closed
November	commonly seen
December	commonly seen

The one shark that can be counted on at Apo Reef.

Humphead wrasseCheilinus undulatus

Sighting likelihood by month
Month	Likelihood
January	occasional
February	occasional
March	occasional
April	occasional
May	occasional
June	occasional
July	occasional
August	destination closed
September	destination closed
October	destination closed
November	occasional
December	occasional

Napoleon wrasse are listed by park management among the threatened species present and are reported from the plateau edges and Shark Ridge.

See all 12 species

Bumphead parrotfish Grey reef shark Hawksbill turtle Banded sea krait Great barracuda Blacktip reef shark Reef manta ray Scalloped hammerhead shark

02 · Dive sites

Dive sites worth knowing

A starting point, not a ranking. Conditions decide what works on the day.

Apo 29 (Barracuda Hill)

A submerged mound south of the main reef, dived only when conditions allow.

29–45m · Strong current

Apo Island Wall

The house-reef equivalent for anyone camping on Apo Island.

6–30m · Mild current

Binangaan Drop-off

A proper wall dive with no bottom in sight.

8–40m · Strong current

See all 6 dive sites

Cayos del Bajo Hunter's Rock Shark Ridge

03 · LogisticsGetting there and costsModerate. Fly to MNL. Typical trip $–$$.

Route overview

Moderate

Reachable but with some friction: 1 domestic flight, a 2h boat crossing.

Airport options

MNL

Ninoy Aquino International Airport, Manila

Main international arrival point. From Manila you can either connect onto the daily San Jose (SJI) flight, or travel overland and by RoRo ferry: road to Batangas Port, ferry to Abra de Ilog on Mindoro, then van south to Sablayan: roughly 8-10 hours in total.

SJI

San Jose Airport (Occidental Mindoro)

Closest airport to Sablayan, about 2 hours by road. Domestic only, but Cebu Pacific flies SJI-Manila daily on mainline A320s (about 1h05), so flying in is usually faster than the overland route. One thin route with no international arrivals means a cancellation leaves few alternatives.

Typical trip cost

$–$$

under $2,000 to $2,000–4,000

Per person, excluding international flights.

Cheap by dive-travel standards; the cost is time, not money.
Day trips from Sablayan or Pandan Island with 3 dives are commonly quoted around PHP 13,000-15,000 (about $220-250) for the boat.
Liveaboards that include Apo Reef on Batangas or Coron itineraries run roughly $1,500-4,000 per person for 3-10 nights.

Permit or park fee

What you pay

confirm the current rate with the Sablayan Tourism Office before travelling.

How it works

Permits are issued by the Sablayan Tourism and Protected Area Office under DENR regulations, and are arranged before departure: divers cannot simply turn up at the reef. The park is jointly managed by the DENR Protected Area Management Office, the Protected Area Management Board (PAMB) and the Municipality of Sablayan. The whole reef has been a no-take zone since 2007. A single-use plastics ban is in force inside the park. Overnight stays are on Apo Island only, at a ranger station with tents and basic fan rooms.

Sources & last checked

Checked August 2026

Research is source-backed, but conditions and fees should still be confirmed locally.

View 11 sources and checking notes

Apo Reef, Wikipedia
Apo Reef Natural Park — Blue Parks Awardee (Platinum, 2022), Marine Conservation Institute
First-of-its-kind Global Survey Reveals Sharks are Depleted in the Philippines, Large Marine Vertebrates Research Institute Philippines (LAMAVE)
Apo Reef Natural Park Rapid Site Assessment Report, April 2014, Mindoro Biodiversity Conservation Foundation Inc.
Fees for visitors — Apo Reef, Friends of Apo Reef
Sablayan Water Temperature, Sea Temperature Info
Apo Reef diving guide, Underwater Asia
Diving Tours to Apo Reef, De Luna Diving
Map of dive sites in Apo Reef, Mindoro, Philippines, Starfish.ch
San Jose Airport (Mindoro), Wikipedia
How to get there — Apo Reef, Friends of Apo Reef

Note on the data: Dive-site coordinates are approximate positions derived from the reef's published centroid (12 39 42 N, 120 24 52 E) and written descriptions of where each site sits on the atoll — they are not surveyed dive-site GPS and should be treated as indicative only. Hunter's Rock is described by sources as 10-20 km west of Apo Island and its position here is the roughest of the set. The UNESCO tentative-list page (whc.unesco.org/en/tentativelists/5033) returned HTTP 403 and could not be fetched; tentative-list status (submitted 2006) rests on Wikipedia. Apo Reef is NOT an inscribed World Heritage Site. The 'second-largest contiguous coral reef in the world' claim is repeated by the park's own DENR management plan and by Marine Conservation Institute, but it is a management-authority claim rather than an independently peer-reviewed ranking, so it is attributed rather than asserted. The DENR management plan PDF and the 2014 Rapid Site Assessment PDF could not be parsed directly; their figures reached this brief via search summaries. Park fees vary between published schedules (PHP 940 vs PHP 780 for foreign non-divers) — the 2024-2025 Friends of Apo Reef figures are used and flagged as needing confirmation with the Sablayan Tourism Office. Shark likelihoods are coded conservatively: hammerheads are rare, not seasonal-reliable, despite several dive-guide sites claiming a November-March window on thin evidence. Manta rays are listed by the park as present but there is no credible sighting-rate data, so they are coded rare. Some dive-guide sources consulted (philippinedives.com, dive-the-world.com) show signs of generated content — one lists 'Manta Bowl' and 'Rock Point West', which belong to Ticao and Dauin respectively — so site names here were restricted to those corroborated across at least two independent sources. Water temperature is coastal Sablayan surface data, not offshore reef measurement. Banded sea krait conservation status is recorded as least concern from general knowledge; the IUCN Red List entry was not fetched during this pass. Water temperature: Values are rounded from published monthly minimum and maximum sea-surface temperatures for Sablayan on the Mindoro coast, not measured at the reef 30 km offshore; dive-guide sources independently quote 26-30C, and thermoclines on the deeper walls can run a couple of degrees cooler than the surface figure. A 3mm suit covers most of the year. Access: From Manila the standard surface route is road to Batangas Port, RoRo ferry across to Abra de Ilog on Mindoro, then van south to Sablayan — roughly 8-10 hours door to door — followed by a 2-hour, 30 km outrigger crossing to the reef; liveaboards from Batangas, Puerto Galera or Coron skip the land legs entirely. Independently verified 2026-08-28. The access reasoning was wrong: San Jose (SJI) DOES have a Manila route — Cebu Pacific 5J513/5J514, daily on mainline A320s since 30 March 2025 — so the entry's premise that SJI flies only to Clark is false. transferHoursFromAirport corrected 9→2, domesticFlightLegs 0→1, and the airport blurbs, access notes and first tradeoff rewritten to keep the real difficulty (one thin route, no international arrivals, a 2-hour boat crossing) without the false cause. Non-diver park fees corrected to PHP 780/390/120 — the figures the original brief dismissed as 'other guides' are the current ones — and mandatory booking via the Sablayan Tourism Office added. Laticauda colubrina Least Concern confirmed (IUCN 2010, taxon 176750), closing the researcher's flagged gap. The 'second-largest contiguous coral reef' ranking remains unsupported as a methodology and stays attributed and hedged; UNESCO tentative-list status (2006, never inscribed) confirmed. Global FinPrint framing holds but applies to SURVEYED Philippine sites, not all, and the record-density superlative belongs to Tubbataha. Site names clean of Dauin/Ticao contamination. Outstanding: 'Apo Island Wall' is not corroborated as a distinct site name, Merope Reef is missing from siteIds, and the Hunter's Rock sea-krait aggregation is corroborated only by dive-travel sites, with Hunter's Rock about 10 km west of Apo Island rather than 20.