"Our feet are dry at last": Bamboo and Shells Bring a Fishing Village Relief

A flood-prone island community north of Manila that spent years raising its houses on concrete has begun building a sea defense from bamboo, brushwood, oyster shells and coconut-fiber bags, and residents say the waves are weakening.

The place is Pamarawan, in Malolos City, Bulacan province, home to about 3,000 people, according to AFP ^[1]. Residents have repeatedly lifted their homes on layers of concrete, yet floodwaters kept coming ^[1]. AFP lists storm surges, land subsidence and seas rising with climate change among the pressures ^[1].

What has gone up instead is a trial. The project covers about 14 hectares along Manila Bay, and its first phase was finished in late 2025, according to AFP ^[1]. Workers have built an oyster-shell breakwater roughly 100 metres offshore, set on an artificial shore made from sea sand ^[1].

It is early, and the evidence is the word of people who live there. No independent measurement of the results has been published. But those people are specific.

"This has made a huge difference for us. We can still feel the waves, but they have significantly weakened. (They're) almost nothing now," fisherman Edgar Javier told AFP, saying the breakwaters helped keep floodwaters out during typhoons and monsoon rains in 2026 ^[1]. He recalled a concrete wall at his home that waves had brought down ^[1].

Arsenia Cabigao, 58, dries fish for a living. Flooding had submerged the ground where she lays it out, she told AFP. "Our feet are dry at last. They weren't before," she said ^[1].

What is actually in the water

The design is humbler than a wall. Bamboo poles are packed with brushwood, and bamboo sediment traps sit behind them. Oyster shells are held in coconut-fiber bags and stacked into a breakwater ^[1][2]. The Daily Tribune described interlocking bamboo frames, oyster bags and sediment traps ^[3].

The aim is to take the force out of waves before they reach the houses, and to catch the silt the water carries so the seabed slowly rises. Project manager Lyana Galang told AFP the breakwater's main job is to lessen wave impact, and that the oyster barriers work together with the bamboo traps ^[1].

The sequence is meant to be slow. Sediment settles and firms up the seabed, oysters can colonise the shells, and only then do mangroves come into question ^[1][2]. A scientific assessment due in 2027 will decide whether planting can begin, Mayor Christian Natividad told AFP ^[1]. No mangrove planting has been confirmed so far.

Who is behind it

The work began with a study launched by the Malolos City government and a Dutch engineering consultancy, Haskoning ^[1][2]. Haskoning says it leads detailed design and construction, with support from the Netherlands Enterprise Agency, Partners for Water and Rijkswaterstaat, the Dutch public works agency ^[2].

The firm calls the project the Philippines' first implemented nature-based coastal protection pilot, and says it was co-designed with local government and residents, using their knowledge of tides, sediment movement, erosion and fishing routes ^[2]. It also says 80 to 90 percent of construction labour comes from Pamarawan itself ^[2].

Haskoning reports that sediment is building up inside the project area and that less wave energy now reaches the community ^[2]. That is the builder describing its own pilot, and it has an interest in the pilot looking good.

A community that chose risk

Trusting this was not automatic. Natividad said the project first met resistance from officials and residents, and that the community had no blueprint to follow ^[1].

"It's like you accept daily flooding or you do something else with risk. I chose risk," he told AFP ^[1].

He frames the change as a change of stance. "It's hard to fight water. Now we're trying to live with water," he said, and, "We're building with nature" ^[1]. For a village that spent years raising floors against the tide, that is a reversal.

The mayor also makes a money argument. He put the cost of the nature-based installations at 70 million pesos, maintenance included, against around 90 million pesos for a concrete seawall ^[1]. That is about 22 percent cheaper on his figures. He expects bamboo to need replacing every five years ^[1].

Nobody outside the project has yet checked what the two figures include.

The Filipino scientist Antonio Contreras told AFP the approach is no universal answer, least of all in catastrophic floods, and should complement conventional infrastructure rather than replace it ^[1]. He warned that bamboo rots over time and releases carbon as it decomposes ^[1]. He said the design could be copied elsewhere only if local environmental conditions are weighed and materials are sourced sustainably ^[1].

He also made a point that cuts against the old habit. Some concrete dikes and seawalls in the Philippines, he said, were built without adequate study ^[1].

That is the opening Vince Dizon, a former head of the public works department, stepped into on a visit. He told reporters he hoped the project could be replicated. "We need to study this, and learn from those who know and have already done this correctly, so we won't waste public funds again," he said ^[1].

The test that matters has not yet come. A year of typhoons and monsoon rains without the old flooding is encouraging.

A strong typhoon with a storm surge is the real examination, and no one can say how a bamboo-and-shell barrier will fare. Natividad himself says the project's success will become clearer over the next decade, as sediment gathers and stabilizes the seabed ^[1].

The next fixed date is the 2027 assessment, which will say whether Pamarawan gets its mangroves.