Once these systems collapse, they do not bounce back.
Along Portugal's ancient coastline, where the Atlantic has shaped both culture and livelihood for centuries, a coalition of nearly eighty scientists, civic voices, and maritime industries has issued a collective warning: the underwater forests that sustain ocean life are vanishing faster than institutions have chosen to acknowledge. The Manifesto of Milfontes, signed in late May in the coastal town of Vila Nova de Milfontes, calls on Portugal to adopt a National Marine Biodiversity Strategy extending to 2040 — a formal, science-backed commitment to protect seagrass meadows, kelp forests, coral gardens, and sponge beds before they cross the threshold of no return. At its heart, the appeal is a question every maritime civilization must eventually face: will the generation that understands the loss be the one that finally acts to prevent it?
- Portugal's coastal ecosystems — seagrass meadows, kelp forests, coral gardens — are degrading at an accelerating pace, threatening fisheries, storm protection, and climate regulation simultaneously.
- International science warns that marine ecosystems can cross ecological tipping points from which recovery becomes impossible within any human timescale, making delay not a risk but an irreversible choice.
- A coalition of nearly eighty signatories — researchers, environmental groups, maritime operators, and citizens — united around the Manifesto of Milfontes to signal that this is not a fringe concern but a broad societal alarm.
- The manifesto proposes a detailed framework of guiding principles for a National Marine Biodiversity Strategy with a 2040 horizon, grounded in science and designed for legal backing.
- The document is being sent to Portugal's President, Government, Parliament, and key institutions — its impact now rests on whether those in power treat it as an urgent mandate or a bureaucratic formality.
In late May, nearly eighty scientists, business leaders, environmental advocates, and citizens gathered in the coastal town of Vila Nova de Milfontes to sign an urgent collective appeal: Portugal's underwater forests are disappearing, and the country needs a comprehensive national strategy to save them.
The 'Manifesto of Milfontes' emerged from a scientific meeting held during the fourth edition of the Marine Forests Festival. The seagrass meadows, kelp forests, coral gardens, and sponge beds lining Portugal's coast are degrading at an accelerating pace — and these are not peripheral ecosystems. They sustain fish populations, buffer coastlines against storms, absorb atmospheric carbon, and underpin the resilience of the entire ocean. Lose them, the manifesto warns, and you lose all of that at once.
What distinguishes the appeal is its grounding in hard science. Signatories point to international research showing that marine ecosystems can cross ecological thresholds from which recovery becomes extraordinarily difficult or simply impossible within any human timescale. The manifesto is accompanied by a detailed annex proposing guiding principles for a National Marine Biodiversity Strategy extending to 2040 — a framework rooted in the best available science and endorsed by a genuine coalition of academia, civil society, and maritime industries.
The promoters make a pointed argument about Portugal's position: the country controls one of Europe's largest exclusive economic zones and hosts a marine research community of genuine international standing. These advantages, they argue, place Portugal in a rare position to lead Atlantic conservation efforts — but only if it commits now to a strategy that is serious, sustained, and backed by law.
The document will be sent to the President, the Government, Parliament, and other national bodies. The science is clear, the coalition is broad, and the window is narrowing. What happens next depends entirely on whether those who receive it choose to listen.
In late May, nearly eighty scientists, business leaders, environmental advocates, and concerned citizens gathered in the coastal town of Vila Nova de Milfontes to sign a document with an urgent message: Portugal's underwater forests are disappearing, and the country needs a comprehensive national strategy to save them.
The "Manifesto of Milfontes" emerged from a scientific meeting held during the fourth edition of the Marine Forests Festival. The signatories—researchers from universities and research centers, representatives of environmental organizations, maritime operators, and ordinary citizens—came together around a shared alarm. The seagrass meadows, kelp forests, coral gardens, and sponge beds that line Portugal's coast are degrading at an accelerating pace. These ecosystems are not luxuries. They anchor the entire web of ocean life. They sustain fish populations that feed people. They buffer coastlines against storms. They absorb carbon from the atmosphere. They make the ocean resilient. Lose them, the manifesto warns, and you lose all of that at once.
What makes the Milfontes appeal distinctive is not just its breadth of support but its grounding in hard science. The signatories point to international research showing that many marine ecosystems can cross ecological thresholds from which recovery becomes extraordinarily difficult, painfully slow, or simply impossible within any human timescale. This is not speculation. This is the consensus of the global scientific community. Once these systems collapse, they do not bounce back.
The manifesto itself is accompanied by a detailed annex proposing guiding principles for what the signatories call a National Marine Biodiversity Strategy with a horizon extending to 2040. The framework is designed to be comprehensive and long-term, rooted in the best available science and explicitly endorsed by the scientific community, civil society organizations, and maritime industries. It is, in other words, not the work of a single interest group but a genuine coalition.
The promoters of the manifesto make a pointed argument about Portugal's position. The country controls one of Europe's largest exclusive economic zones—the ocean territory where it has sovereign rights to resources. It also hosts a marine research community of genuine international standing. These are not small advantages. They represent a rare combination of responsibility and capacity. Portugal, the signatories argue, is uniquely positioned to lead conservation efforts in the Atlantic Ocean. But only if it acts now, and only if it commits to a strategy that is serious, sustained, and backed by law.
The document will be sent to the President of the Republic, the Government, the Parliament, scientific institutions, local authorities, environmental organizations, and other relevant national bodies. What happens next depends on whether those recipients treat it as a wake-up call or as one more petition to file away. The science is clear. The coalition is broad. The window for action is narrowing. The question now is whether Portugal will listen.
Notable Quotes
Portugal, holder of one of Europe's largest exclusive economic zones and a marine scientific community of international excellence, is uniquely positioned to assume strategic leadership in Atlantic Ocean conservation.— Manifesto of Milfontes signatories
The Hearth Conversation Another angle on the story
Why does a manifesto about marine ecosystems need nearly eighty signatures? Couldn't scientists just publish a paper?
A paper reaches other scientists. A manifesto reaches power. These signatories wanted to say: this is not a specialist concern. This is a national priority. Business leaders signed because they know fishing depends on healthy ecosystems. Environmental groups signed because this is their core work. Citizens signed because they live on this coast. That breadth matters.
The manifesto mentions ecosystems crossing "points of no return." How certain is that science?
It's the consensus view. Once a seagrass meadow is gone, the conditions that allowed it to exist often don't return naturally. The ecosystem shifts to a different stable state. You can restore it, but it takes decades and enormous effort. That's what "no return" means—not that recovery is impossible, but that it's so slow and difficult that it might as well be, from a human perspective.
Portugal has a large exclusive economic zone. Does that actually give it leverage to lead on ocean conservation?
It gives it responsibility and opportunity. A large zone means Portugal has more ocean to protect and more at stake if it degrades. It also means Portugal's research institutions have studied these waters extensively. If Portugal develops a serious strategy and implements it well, other Atlantic nations will notice. That's what leadership looks like in this context.
What does a "National Marine Biodiversity Strategy" actually do? Is it just words?
It depends entirely on implementation. A strategy with teeth includes legal protections for key ecosystems, funding for monitoring and restoration, restrictions on damaging activities, and accountability mechanisms. Without those, it's indeed just words. The manifesto signatories are asking for a framework that's binding and long-term, not a voluntary guideline.