Mangrove Swamp Forest Reserve

Overview

Mangrove Swamp Forest Reserve is a protected natural area on Pangangan Island in the municipality of Calape, northwestern Bohol, designated in 1981. It is listed in the provincial tourist-attraction inventory under Nature / Other Natural Attractions.

The reserve’s core is the mangrove buffer planted along the Pangangan Island Causeway, which connects the island to the Calape mainland at barangay San Isidro–Lawis. Planting began in the late 1950s, led by local school principal Felipe Josol Ytac Sr. and his students, and was expanded into an annual community activity from 1961 by his successor, Anastacio Toloy. By 1982 the plantation covered roughly 6 hectares along 2.5 km of causeway; today it has grown to an estimated 54 hectares protecting both sides of the crossing. Species recorded include Rhizophora stylosa (the original planted species), Avicennia marina, Sonneratia alba, and a locally noted bakauan hybrid.

Specific wildlife and bird species observed in the reserve, the current management authority, and any formal access rules or permits are not detailed in available sources; check with the Calape municipal or barangay office for up-to-date guidance before visiting.

The mangrove line does more than shelter the causeway. Established stands like this one function as a nursery zone for the crab, shrimp, and shellfish that feed Calape’s coastal households — the same kind of tidal-flat gathering documented at Barangay Abucayan elsewhere in the municipality, where residents harvest oysters and shellfish at low tide. A causeway-length mangrove buffer of this size effectively extends that nursery habitat across several kilometres of shoreline rather than a single cove, which is part of why the reserve earns formal protected status rather than being treated as incidental roadside greenery.

Location

Pangangan Island, Calape, Bohol. Pangangan Island lies off the northwestern coast of Bohol, connected to Calape town proper by the Pangangan Causeway.

Getting There

Calape is approximately 40 km northwest of Tagbilaran City. From Tagbilaran, take a bus or jeepney toward Tubigon and alight at Calape. Pangangan Island is reached by road via the 3.5 km Pangangan Causeway from barangay San Isidro–Lawis — no boat crossing is required to reach the island itself.

Practical Info

• Currency: PHP
• Language: Cebuano, Filipino, English
• Entry fee, guide requirement, operating hours, and permit requirements are not published; confirm locally with the barangay or municipal tourism office before your visit.

What to Expect

A mangrove forest reserve lining the Pangangan Causeway on an island setting. Planted originally to buffer the causeway roadway from storm surge and wave action, the stand has since matured into habitat that supports coastal fisheries and shoreline stability in its own right — a rare case in Bohol of engineered infrastructure planting becoming a formally designated nature reserve.

The planting effort behind the reserve is a multi-generation community project rather than a one-off government initiative: a local school principal started it with his students in the late 1950s as a practical fix for a road that kept washing out, and a successor turned it into an annual civic planting drive from 1961 onward. The reserve that exists today — an estimated 54 hectares, up from roughly 6 hectares in 1982 — is the accumulated output of six decades of that recurring, largely volunteer labor, which makes it as much a piece of local civic memory as it is a conservation site. Visitors interested in the ecological angle of a Calape stop will find this the clearer story to tell than the causeway drive itself, since the trees are the actual mechanism protecting the road, the fisheries, and the shoreline all at once.

Whether a dedicated walkway or boardwalk exists, specific bird and fish species present, and any tour operators offering guided access are not documented in current sources; ask locally in Pangangan or Calape about current viewing options.

Notes

• Listed in BPTO provincial tourist-attraction inventory under Nature / Other Natural Attractions
• Gateway municipality: Calape (nearest NW port: Tubigon)
• Saving the Pangangan Island Causeway, accessed 2026-07-17.
• panggangan island – the pauses between, accessed 2026-07-17.