Pamilacan Sanctuary
Also known as: Pamilacan Island Sanctuary, Sanctuary (Pamilacan Island), The Sanctuary
The macro dive of Pamilacan's three: a shallow coral shelf over a rock and block slope, beside a buoyed no-take core divers may not enter.
Last updated August 2026
The dive
The boat stops several hundred metres short of a line of buoys, over shallow coral. That gap is the design of the dive, not an accident of anchoring. From the coral the ground tips away into a slope of rock and block, cut with small overhangs and ravine-like breaks, with the reef crest starting at about 5 metres.1 The macro sits on that slope. Nudibranchs in the shaded cuts, pipefish on the rock, garden eels standing out of the sand patches between.
Groups work it laterally and slowly, with the buoy line always somewhere ahead. The pace is the point. Nothing here rewards depth. Most of the dive happens well above the deepest ground, and the animals it is run for are small enough that covering distance costs you them.
Then it ends in a way most reef dives do not. As the buoys come up, the guide takes the group off the reef and out into open water for the safety stop, instead of hanging over the reef top.
What makes it special
Of Pamilacan's three dives, this is the one you can spend a whole tank inside twenty metres on. Dakit-Dakit is run as a drift and starts deep. Spanish Tower is a wall and a landmark. Sanctuary gives you a small patch of slope and a reason to look at it hard.
The reef under that slope grades as fair, and the numbers behind that word are public. In 2023 live hard coral ran to 34 percent inside the protected core and 35 percent outside it, both graded fair, over a substrate that is still mostly non-living.1 The shallow flat at 3 to 4 metres has stayed in poor condition through sixteen years of monitoring.
The more interesting half of the record is what happened to the fish. Reef fish density has fallen by roughly 40 percent since 1986. Over the same period the fish inside the protected line got bigger, and species diversity rose there while it fell outside. Fewer fish, larger ones, more kinds of them behind the buoys. That pattern is what an enforced no-take zone produces, and it is why the crossing is worth making for a reef whose coral is only fair.
History and origin
Researchers from Silliman University ran baseline reef assessments at Pamilacan in 1985. A year later the island had a sanctuary, set up through community participation with local government support, and those survey results led to the entire coral reef area around Pamilacan being declared a Marine Reserve with an 11.9 hectare Fish Sanctuary inside it.1 The legal instrument came later and is still the one in force: Municipal Ordinance No. 1, Series 1994, under the Municipality of Baclayon.2
Who keeps the rule is the unusual part. Enforcement on the water is done by the Pamilacan Fishermen's Association, an island people's organisation, and has been since the sanctuary was established. The people who fish this reef are the ones who close part of it to fishing.
It has held. In 2003 the sanctuary took the highest management rating of the Bohol sites surveyed, a level 4 described as a sustained phase.1 Target fish biomass inside the line went from 7.9 kg per 500 square metres in 2007 to 44.4 kg in 2023. Biomass climbing while density falls is what enforcement looks like on a reef, and the monitoring here runs back to 1984, a longer record than most small sanctuaries in Bohol carry.
Know before you go
The buoys are not a turnaround marker. Inside them is a no-take core where diving is not allowed at all: 11.90 hectares, no take of any kind, marked on the surface and nowhere else.2 The exact boundary is not published as a polygon, so your guide is the only person on the boat who knows where the line runs on the day. Stay with the group, take nothing, and keep well away from the markers. The dive is built to do that for you. It leaves the reef before they arrive.
The safety stop happens in blue water with nothing underneath you, and that is the one part of this dive that wants an SMB up before you leave the slope. The boat is looking for a group with no reef top to mark where it should be.
A torch is worth carrying for the overhangs and the ravine-like cuts, because the small animals sit in there and not out on the open rock.
Two or three tanks get run in a single outing out here, so plan gas and no-decompression time across the whole day and not dive by dive.
Why Dive Pamilacan Sanctuary
What makes this dive site stand out.
- Macro on the slope
Nudibranchs, pipefish and garden eels on a rock and block drop below the coral shelf.
- Rock and block terrain
Small overhangs and ravine-like cuts, with the reef crest starting at about 5 metres.
- Shallowest of the three
The interest sits between 5 and 25 metres, inside what an Open Water card covers.
- Blue water finish
The dive leaves the reef and makes its safety stop out in open water.
- Measured reef condition
Live hard coral around 34 to 35 percent in 2023, graded fair inside and outside the core.
Depth & Profile
Conditions & difficulty
Summary
No grading is published for this dive on its own, and two things pull against each other. The profile is the gentlest of Pamilacan's three: shallow start, macro above 25 metres, nothing to be carried along by. The setting is an offshore day trip with no shore exit and a legal boundary to stay clear of.
Safety considerations
What can go wrong here, and what divers do about it. Conditions change - take the briefing from the operator on the day.
- Site rules: A buoyed no-take core of 11.90 hectares sits beside the dive, closed to diving and to taking anything. The boundary is not published as a polygon, only as buoys on the water.Stay with the guide, who is the only person who knows where the line runs on the day. Do not cross the buoys, do not use them as a turnaround, and take nothing.
- Surface and boat traffic: The dive ends off the reef. As the buoys come up ahead, the group leaves the slope and makes its safety stop out in open water, where the boat has to find divers away from a reef top.Deploy an SMB before ascending and stay together as a group.
- Remote location: Roughly 18 km offshore, with the boat as the only way out of the water and no dive operation on the island itself. First response is close; definitive care is not.Conservative gas planning, and a plan built around the whole day out.
- Depth: The slope carries down to 30 metres on a trip that runs two or three dives in a day.Watch no-decompression limits across the whole day. The macro sits well above the deepest ground, so there is no reason to go looking for it.
Marine Life
Regulations
The protection is two-tier. The entire coral reef area surrounding Pamilacan Island is a Marine Reserve, and diving is permitted there. Inside it sits an 11.90 hectare Fish Sanctuary, buoyed, no take of any kind, and closed to diving. The governing authority is the Municipality of Baclayon under Municipal Ordinance No. 1, Series 1994, and the rule is enforced on the water by the Pamilacan Fishermen's Association. The trip carries a fee beyond the dive price, applied differently by each operator. Confirm what yours covers when you book.
Frequently Asked Questions
Can you dive inside the Pamilacan fish sanctuary?▾
No. Two different things carry the word sanctuary here and only one of them is diveable. The entire coral reef area around Pamilacan Island is a Marine Reserve, and that is where all three of the island's dives happen. Inside it sits an 11.90 hectare Fish Sanctuary marked by buoys, which is no take of any kind and closed to diving. Every operator briefs the same rule. The dive named Sanctuary runs along the outside of that core and turns off the reef into open water for its safety stop before reaching the buoys, so the boundary is never something you swim up to and turn at.
Was the Pamilacan sanctuary set up in 1985 or 1986?▾
1986, with 1985 as the year the work behind it was done. Researchers from Silliman University ran the baseline reef assessments at Pamilacan and Balicasag in 1985, and the sanctuaries were established a year later through community participation and local government support. The formal date of establishment is 1 January 1986. Municipal Ordinance No. 1, Series 1994 is the legal instrument, which formalised a sanctuary that had already been running for eight years. Where you see 1985 quoted as the founding year, it is the survey year.
What condition is the reef in at Sanctuary?▾
Fair, and rising slowly from a low base. The 2023 survey put live hard coral at 34 percent inside the protected core and 35 percent outside it, both graded fair, with most of the remaining substrate non-living. The shallow flat at 3 to 4 metres is the weaker story: it has been graded poor across sixteen years of monitoring. Coral cover has been increasing since 1984, so the direction is right, but this is not a dive to book for reef scenery. Book it for the small animals on the slope.
Which of Pamilacan's three dives suits a newly certified diver?▾
This one. Sanctuary starts shallow and its interest sits between about 5 and 25 metres, so an Open Water diver can do the whole thing inside their own limits without missing anything. Dakit-Dakit is the opposite: it is a drift and its usual profile begins at about 25 metres, past an Open Water card. Spanish Tower sits between the two. Operators do take Open Water divers to Pamilacan and recommend Advanced, and that recommendation covers the offshore day, not this slope.
Is Sanctuary a good dive for macro photography?▾
It is the Pamilacan dive built for it. Nothing pushes you along the reef, the interest sits shallow enough for a long bottom time, and the ground is broken into small overhangs and ravine-like cuts where the subjects sit. Carry a torch even at midday, because those cuts stay dark. The one constraint is the boundary: you are working one side of a line you cannot cross, so build the dive along the slope and not around one subject you might not be allowed to reach.
Should you expect current at Sanctuary?▾
Ask on the boat, and do not carry an assumption over from the neighbouring sites. Pamilacan is exposed and an hour of open water from Panglao, and the three dives around it behave differently. Dakit-Dakit is a drift dive, Spanish Tower can move, and Sanctuary is worked slowly along the slope. Conditions on the day also decide which of the three the operator runs at all, so the briefing is where you get the answer.
References
- 1.Coastal Conservation and Education Foundation, February 2024 — Saving Philippine Reefs: Coral Reef Monitoring Expedition to Bohol, Philippines, 2023
- 2.Coral Triangle Atlas (CTI-CFF) — Pamilacan Island Fish Sanctuary, MPA record 4007100
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