Asili Company partners with coastal fishing communities to set up CORE Zones, Community Ocean Regeneration Enterprise Zones: areas of sea the community closes to fishing, where a village cooperative ranches sandfish and the returns pay for protecting the area.
The enterprise funds protection. Protection regenerates the ocean. The ocean sustains the enterprise.
Conservation has treated ocean protection as a funding problem. We treat it as an enterprise problem.
Fishing pays a family today, in cash, every day. Protection pays later, to everyone at once, and much of the benefit goes to the ecosystem and to the next generation. For a family on the water, the daily choice comes down to what feeds the household this week.
The conservation sector has answered with grants, livelihood supplements and awareness programmes that run alongside fishing. When the money runs out, management often stops and fishing resumes. Protection has rarely been made to pay for the communities doing it. CORE Zones are designed to change that.
A CORE Zone is an area of sea that a coastal community closes to fishing of every species, through its Shehia Fishers Committee and Sheha. A village cooperative ranches sandfish inside it in partnership with Asili Company, and the returns pay the people who run the ranch, a fund for the village, and the patrols that protect the area.
Sandfish grow well only where the whole ecosystem is healthy. Protecting the whole area is how the ranch produces.
Hatchery-raised sandfish, ranched in a community-protected area and processed to export grade, sold as bêche-de-mer with a known origin.
Returns are shared: half to Asili for its inputs and costs, a quarter to the people who work and patrol the ranch, a quarter to the village.
Paid patrols keep the area closed, the seagrass, fish and sea cucumbers recover, and the next harvest grows from a healthier sea.
Structural alignment of social equity, ecology and economics: the foundation of every CORE Zone.
Equity, ecology and economics are built into the same enterprise, so each one supports the others.
The enterprise and the conservation outcome are the same thing: the ranch produces only when the protected area recovers.
Sea cucumbers were once common across tropical seagrass beds. Decades of harvesting have removed them from much of the near-shore habitat they once worked. Without them, less sediment is turned over and fewer nutrients are recycled back to the seagrass and the life around it.
Ranching sandfish inside a protected area puts them back to work while the whole area recovers. The farming and the regeneration happen in the same place, at the same time.
Asili Company produces dried sandfish, Holothuria scabra, sold as A-grade bêche-de-mer (trepang). Our sandfish grow on the seagrass inside areas their communities have closed to fishing, not in overfished wild stocks, polluted water or intensive ponds.
Every batch is processed to strict quality protocols for international buyers and can be traced back to its site and community of origin. It is for buyers who care about provenance, purity and how their seafood is produced.
Holothuria scabra, sandfish
A-grade dried bêche-de-mer / trepang
Ranched in community-protected seagrass, Pemba
Site and community of origin for every batch
A community ranch is only as reliable as its supply of juveniles. That is why Asili is building its own hatchery into the model, so the input every CORE Zone depends on sits inside the enterprise.
The first CORE Zone: Shamiani, on Kiweni Island in South Pemba, opened in May 2026. The Shehia Fishers Committee laid the boundary buoys, and the Shamiani Sea Cucumber Cooperative runs the ranch.
Community patrol: the cooperative and the SFC patrol the area from watchtowers and floating security rafts.
Our own hatchery: under construction on Kiweni Island. It will supply sandfish juveniles to the ranches, so supply does not depend on anyone outside the model.
The Kiweni Replication Centre: owned by the Kiweni Cooperative, it hosts partner teams who come to Pemba to learn the model.
Community monitoring: cooperative members are trained to monitor seagrass and sandfish in their own area.
CORE Zones are designed to deliver outcomes in four areas at once, each tied to the same enterprise.
Pemba's coastline has the community governance structures and seagrass habitat to support many more CORE Zones. Each new site shares the same hatchery, processing and buyers, and adds to the evidence base.
We scale through community practitioners, not company-owned expansion. Partner teams come to the Kiweni Replication Centre on Pemba to work through the whole model, from ranching to governance, patrol and benefit sharing, and keep Asili as their technical partner when they go home.
The model applies wherever Holothuria scabra and seagrass occur together, across the tropical Indo-Pacific: East Africa, the Mozambique Channel, Madagascar, South and Southeast Asia and the Pacific Islands, where community resource management frameworks are already in place.
Near-shore fisheries are in decline. Across the Indo-Pacific, the communities most exposed are also the ones best placed to reverse it, if the economics work for them.
Aid budgets are shrinking. Cuts to USAID and UK aid, and a wider retreat of public conservation funding, make models that pay their own way more urgent.
Nature finance is developing. OECM frameworks, blue economy commitments and biodiversity finance are opening new support for community-governed areas that show real conservation outcomes.
The model is built on field experience. More than 15 years of community sandfish farming shaped it, and on Pemba the first CORE Zone is open and our own hatchery is being built.
Buyers want to know where seafood comes from. Hatchery-raised sandfish from community-protected areas, with a known origin, answer that demand.
30×30 needs community-governed areas. Every CORE Zone on Pemba lies inside a gazetted Marine Conservation Area, and we intend to support the government in recognising CORE Zones as OECMs.
We have the model. We need the scale.
Public co-investment brings each community into the model: training, equipment and wages until the first harvest. Private capital builds the hatchery, processing and market access that serve every site. We welcome direct conversations with investors, philanthropists, buyers and replication partners.
Buyers and distributors of bêche-de-mer serving restaurants, retailers and markets that value seafood they can trace to a community-protected site. Talk to Alexandra →
Private capital for the hatchery, processing and market access that serve every site, and philanthropic co-investment that brings each community to its first harvest. Talk to Timothy →
Independent study of what CORE Zones do for seagrass, sediment, fish, coral and the communities who run them. Talk to Timothy →
Governments, development organisations, community groups and marine governance bodies that want to bring the model to their coastline. We provide the system; partners bring the relationships and local legitimacy. Talk to Daud →
How a community closes its area, who does what, how returns are shared, and how the model replicates.
What sandfish do for the seabed and seagrass, and why they are worth ranching.
The research behind the model and how we monitor each site.
Wages before harvest, shared returns, the village fund and community governance.
Science, juveniles, training, patrol equipment, processing and market access.
How the model is financed, partners and collaborators, and investor information on request.
The team, and why this model had to be built.
Whether you are a buyer, investor, researcher or potential replication partner, write to the member of our team who covers your question. We share figures, documents and site detail in a call.
Sea cucumber production, aquaculture science, the hatchery, research partnerships and investment inquiries.
aquaculture@fullcircle.dev
Product inquiries, buyer relationships, sales partnerships and distribution.
markets@fullcircle.dev
Zanzibar operations, community partnerships and field visits.
zanzibar@fullcircle.devFrom protecting the ocean
to rebuilding the systems that sustain it.
Conservation built into the business itself.