Blue Carbon on Sea Country: Benefit Sharing and Free, Prior, Informed Consent

Almost all blue carbon happens on someone else's country. The mangrove estuaries, seagrass meadows and kelp reefs that generate carbon credits sit within coastal and marine territories that Indigenous peoples have used, managed and held law and story for — in many cases for tens of thousands of years, and in many places under rights that colonial legal systems recognized late, partially or not at all. A blue carbon sector that treats these territories as empty seabed is repeating one of conservation's oldest mistakes with a new revenue stream attached. The alternative — projects designed with Indigenous communities as rights holders and partners — is not only more just; the evidence from land-based carbon programs suggests it produces better, more durable projects.

This article explains the three concepts that determine whether a blue carbon project gets this right: sea country and tenure, free and informed consent, and benefit sharing. It is written for developers, buyers and policymakers, and it is honest about how young marine frameworks are compared with their land-based cousins.

Sea country and the tenure problem

Australia's Indigenous peoples use the term sea country — mirrored by similar concepts in the Pacific, Arctic and elsewhere — for marine and coastal areas to which they hold customary rights, responsibilities and cultural connections. The crucial point for carbon projects is that ecological management of sea country is not new. Indigenous burning, harvesting, seasonal closures and customary law have shaped these ecosystems continuously; the carbon-rich mangrove or healthy kelp forest a project proposes to earn credits from is frequently in good condition because of that management, or in poor condition partly because that management was displaced.

Carbon law, meanwhile, is built on Western tenure concepts, and marine carbon tenure is genuinely unsettled in most countries. On land, the question "who owns the carbon?" usually has a legal answer — however imperfect. At sea, three overlapping rights regimes often collide: public ownership of seabed and waters, statutory rights (fishing licenses, native title determinations, treaty rights), and customary tenure that may not be codified anywhere the carbon registry can read. Who may claim carbon sequestered on public seabed over customary fishing grounds is, in many jurisdictions, a genuinely open legal question.

Projects that ignore this don't make it go away; they simply convert an unresolved legal question into a future dispute. The integrity-centered approach treats tenure clarification as the first project activity, not a permitting afterthought — and accepts that sometimes the honest outcome of that process is that the Indigenous community is the project proponent, with the developer in a supporting role.

Free, prior and informed consent

Free, prior and informed consent — FPIC — is an international standard grounded in the UN Declaration on the Rights of Indigenous Peoples. Each word carries operational weight in a carbon context:

Free means no coercion or manipulation — including economic coercion, such as presenting a project as the only alternative to funding loss, or rushing a decision by tying it to a credit price window.

Prior means consent is sought before activities begin and before key design decisions are locked, not ratified afterward. In practice this means community engagement must start at concept stage, when the project's boundaries, crediting period and revenue model are all still genuinely negotiable.

Informed is the hardest word to honor. Carbon projects are technically dense: baselines, crediting periods of 25–100 years, buffer contributions, permanence obligations, MRV costs. A consent process is only informed if the community has access to independent advice — legal, technical and financial — not paid for or filtered by the developer. Good projects fund that advice explicitly. Consent based on a sales brochure is not informed consent, regardless of how many meetings were held.

Consent means a decision-making process the community itself defines. It is not a public-consultation exercise with a comment box; it is the community's own governance arriving at yes or no, on its own timeline, with the sovereign right to say no — and the right to withdraw consent later if commitments are breached. FPIC is a process, not a signature, and over a multi-decade crediting period it must be renewed, not archived.

Benefit sharing: beyond the revenue cheque

When carbon revenue flows, how it is shared defines the project's justice and its durability. Three models are emerging in blue carbon, roughly in ascending order of integrity:

Payment-for-access arrangements treat the community as a landlord or stakeholder: a fixed fee or percentage of revenues in exchange for consent and perhaps employment commitments. This is the floor, not the ceiling — it can be fair if negotiated with strong independent advice, but it leaves design power entirely with the developer.

Co-ownership models give the community equity or direct ownership of the credit stream: they hold a share of issued credits, sell them on their own account, and participate in price upside. This aligns incentives over the crediting period and builds genuine enterprise capability — as land-based programs like Australia's Indigenous savanna fire management projects have shown, where Indigenous organizations own and operate carbon projects outright and the model has delivered both verified abatement and substantial social dividends.

Indigenous-led projects, the strongest model, invert the conventional structure: the community is the proponent — holding the carbon rights, controlling the methodology application, deciding whether and when to sell — and hires technical capacity as needed. The Indigenous Carbon Industry Network in Australia advocates precisely this direction, and its land-based record makes the marine case persuasive.

Whatever the model, credible benefit sharing shares more than money. Real packages typically include:

• Long-term employment and skills pathways, with ranger and monitoring roles designed as careers, not seasonal labor.
• Co-governance: community seats with decision rights on the project steering body, not advisory seats.
• Data sovereignty: community control over monitoring data about their own country — what is collected, where it is stored, who may publish it. Monitoring platforms like Tidewright's Canopy Ledger generate exactly the kind of data — detailed, georeferenced, commercially valuable — where sovereignty terms must be written into the agreement, not appended.
• Cultural heritage protection, including protocols for sites, story and practice that the project's operations may touch.
• Non-carbon outcomes the community prioritizes — fisheries recovery, food security, protected shoreline — funded and monitored as first-class project objectives rather than marketing co-benefits.

Why buyers should care as much as developers

Benefit sharing is often filed under ethics, but for credit buyers it is also risk management. A project whose consent is contested or whose benefit-sharing deal sours faces suspension of issuance, reputational damage to everyone in the credit's chain of title, and — in a growing number of jurisdictions — legal challenge. Buyers performing due diligence on blue carbon credits, using frameworks like our buyer's guide, should add five community-side questions to the usual carbon-side checklist:

1. Who holds carbon rights at the site, and how was that determined?
2. Is there evidence of a FPIC process — and was the community's advice independently funded?
3. What share of project value flows to the community, in what form, over what period?
4. Does the community hold governance or ownership rights, or only payments?
5. What happens to community benefits if credit sales stop or the project ends early?

Sellers who answer these fluently, with documents, are telling you something important about project quality. Sellers who respond with community photographs and no numbers are telling you something too.

Tidewright's approach

Tidewright's own commitments — stated here as company policy for our fictional program — are built around our Reef Partners framework and our community solutions practice: Indigenous sea-country ranger organizations are engaged at concept stage, before site selection is finalized; independent advice is funded as a project cost; benefit-sharing agreements include revenue share, ranger employment and data-sovereignty terms; and wherever a community has the ambition and capacity to lead, we structure for community ownership with Tidewright in a technical-support role. We regard this as the direction marine carbon must move in everywhere, not a differentiator to be guarded.

Key takeaways

• Blue carbon sites are rarely legally empty; sea country carries customary and statutory Indigenous rights that carbon projects must navigate from day one.
• FPIC is a continuing process over the crediting period: consent given freely, before design lock-in, on the basis of independently advised information, through the community's own decision-making.
• Benefit sharing ranges from payments to co-ownership to Indigenous-led projects; the strongest models share value, governance and data control, not just cash.
• Land-based Indigenous carbon programs demonstrate that community-led projects deliver verified abatement and durable social value together.
• Buyers should treat consent and benefit-sharing quality as core due diligence — it is both an ethical test and a leading indicator of project durability.

FAQ

Does FPIC apply if Indigenous rights aren't legally recognized at a site?

The international standard does not depend on domestic legal recognition — it flows from Indigenous peoples' status as peoples, not from a particular tenure instrument. Practically, unrecognized tenure makes projects riskier, not freer: consent processes remain the only durable foundation for multi-decade land or sea use.

What percentage of carbon revenue should go to communities?

There is no universal number, and fixed percentages can be a trap — a high percentage of a badly structured deal may be worth less than equity in a good one. The better test is whether the community negotiated with independent advice, holds upside, and values the full package: revenue, jobs, governance, data rights and cultural outcomes.

Can a developer run a carbon project without Indigenous involvement where communities show no interest?

Community disinterest, arrived at freely and informed, is a legitimate outcome — but it must be established, not assumed, and revisited as the project evolves. "We contacted them and heard nothing" is not consent and is weak groundwork for a 30-year crediting period.

What is data sovereignty in a carbon project?

It is the community's right to govern data collected on its country: monitoring imagery, species records, site maps and cultural information. It covers ownership, storage location, publication approval and reuse. As blue carbon MRV becomes more data-intensive, these clauses increasingly determine who controls the narrative about a place — and who can prove what happened there.

Are there blue carbon methodologies that require FPIC?

Major standard bodies increasingly require social safeguards, stakeholder processes and — for projects affecting Indigenous territories — consent evidence, though requirements vary in strength and enforcement. Buyers should treat methodology requirements as a floor and apply their own, higher standard, consistent with the integrity principles in our nature-based solutions guide.