The World's First Ocean Buffer Hub

Community carbon removal in Treverva, Cornwall UK

Apr 09, 2026

Alright, alright, alright… hope the sun is shining where you are, it has been lush here in Cornwall the last few days. The sun definitely makes working on the land a lot more appealing! So we’ve been getting stuck in.

A quick shout out to anyone who has registered to volunteer, I think I had some ghosts in my account last week! So if you’re still waiting to hear from me, please reach out on hello@oceanbufferproject.co.uk in case an email has been lost in the ether.

This week has been quieter; not much has changed on the surface, but things are beginning to settle. It felt like the right time to pause, share a small update, and reflect on how far we’ve come. We’ve had some new subscribers join us recently (hello!), and as we approach our first year as an incorporated community company, something that still feels a bit unreal, it feels like a good moment to look back, as well as forward.

First Volunteer Sessions

Really excited that we have had our first few volunteers over at the land now, with more planned throughout the month, and that progress is starting to be more noticeable. Rather than seeming like a bit of an impossible task, it now feels like something we can really do together!

All hands on deck getting the land suitable for use

Obviously I want the land to be as accessible as possible, as soon as possible, so most of our work at the moment is going into removing the dock and orchard grass, which are quite hazardous! Then the plan is to roll and flatten, and sow with meadow seed, which will be much easier to build infrastructure on. Lots still to do, but considering this is where we started:

It was a lot more wild just a few weeks ago!

… I’d say we’re doing pretty good!

The Journey So Far...

From jars on a windowsill to a community hub: where Ocean Buffer Project stands now.

There are some projects that arrive polished, with a launch strategy, a neat logo pack and a five-year plan already laminated. Ocean Buffer Project has never really been one of those. It has grown the way many real things grow: unevenly, honestly, through kitchen experiments, grant applications, late nights, muddy fields, small wins and the occasional bit of chaos. What, I hope, makes it compelling is not that it has skipped those messy stages, but I have been actively sharing them.

At its core, the project is trying to do something both practical and hopeful. In Cornwall, Ocean Buffer Project is building a grassroots, community-led system for growing marine microalgae in contained “mini living oceans” on land. The principle is simple enough to say out loud: algae use light to pull in carbon dioxide through photosynthesis, building biomass as they grow. The project then uses non-chemical flocculation (binding) to bring those tiny cells together, removes the biomass from the water and dries it so the captured carbon is less likely to return straight back to the atmosphere. It is, in my own framing, less about inventing a brand-new “climate miracle” and more about paying close attention to how the ocean already works, then recreating part of that process in a way people can actually see and understand - on land.

A lot of the early work happened in ordinary domestic spaces. Before there was land, before there was a hub idea, there were Word documents, spreadsheets, funding bids, jars, demijohns, dried algae flakes and the steady creep of project materials into my home! The journey from idea to infrastructure did not happen in one leap. It moved from “what if” to funding, then from funding to household-scale experimentation, and only after that into something more public and spatially real.

That shift became a lot more clear around February this year. The land arrived not as a glossy reveal, but as a quarter acre of potential: open, coastal, rough around the edges and full of dock stalks and wild grass. The plans for it are practical rather than glamorous: stringing off the site, cutting back overgrowth, raking, seeding with meadow grass and clover, rolling it flat enough to be safe and accessible and building basic compost and storage structures from reclaimed materials. This is one of the project’s strongest themes: the refusal to separate climate ambition from physical reality. The field has to be walkable before it can be visionary. Volunteers, school groups, wheelchairs and pushchairs have to be able to move through it before it can become the welcoming community hub it wants to be.

At the same time, the algae trials keep acting as both motivator and teacher. I’ve really tried to let the updates return to the living material itself: whether the cultures are thriving, lagging, scorching in too much sun (oops!) or surviving a few unsupervised days. Those details matter because this is not just a science communication exercise. The trials are testing whether a low-energy, community-powered system can actually hold together in the real world. One especially telling moment came when the algae were left for four days and survived perfectly well. That ended up not as a minor convenience, but as a useful sign: if the system is ever going to work for volunteers, and not just for one person hovering over it constantly, stability matters more than speed.

I always want to keep the newsletters as easy to understand as possible, whilst documenting the refinement process. The project has showed that a 10 percent inoculation rate has not been enough for some of the newer tank series and test runs. Growth stalls, density lags and the culture never really takes off. Instead of dressing that up, the lesson is folded straight back into the work. Likewise, water treatment, rainwater capture and low-toxicity inputs are being thought through not as side issues but as part of the whole philosophy. The method has to be environmentally coherent as well as scientifically functional. Recycled machinery beats buying new. Rainwater, safely treated, may prove better aligned with the project than relying on mains. The ethic is not perfection. It is consistency between values and method.

Another noticeable development has been that Ocean Buffer Project is no longer only talking to itself. Over these last few months, the project started plugging into the wider civic and marine landscape around it. Membership of Cornwall VSF, its Climate and Environment Alliance and NCVO marks a move into stronger organisational footing. Meeting with Cornwall Council’s Senior Marine Officer lead to encouragement and invitations into the Cornwall Marine Liaison Group and the Cornwall and Isles of Scilly Marine and Coastal Partnership. That matters because the project is no longer just saying, “here is my unusual idea.” It is starting to test that idea in rooms where marine policy, conservation and community infrastructure are already being discussed.

The same widening out can be seen in how the public face of the project is evolving. The podcast is being reworked into something more diary-like and less polished, deliberately leaning into “field notes” and the human story of building something in real time. Ocean Buffer Project is not presenting itself as a finished answer descending from above. It is letting people witness a live process: the doubts, the setbacks, the admin, the learning, the tiny signs of traction. In a climate space often crowded with overstatement, that restraint may well become one of its most persuasive qualities.

Then came the first public event in March 2026, and with it a proper threshold moment. People actually turned up! We had displays, demonstration materials, dried algae flakes, carbon removal tiles and a short talk explaining the project’s origins, mechanism, present state and future ambitions. Afterwards, I didn’t want the following update to suddenly become triumphant and glossy. Instead it acknowledges the emotional jolt of the thing becoming real in front of other people. There is pride, relief and also the weight of responsibility that comes when a solo, or near-solo, effort begins to become a community one. Practical systems are quietly going in behind the scenes too: insurance, safeguarding, advisory board development and more formal volunteering structures. That is the less photogenic side of growth, but arguably the part that gives the rest of it a chance of lasting.

I really hope it is the tone and language that helps explain why the project has gathered interest. The writing never aims to treat climate action as clean or abstract. It is muddy, domestic, funny in places, tired in places and frequently self-aware. Children appear. Anxiety appears. Failed jars appear. So do dried algae flakes, podcast trailers, reclaimed tools and the stubborn business of turning a rough field into somewhere people might one day gather to learn. The project does not pretend this kind of work is effortless, but makes a case that it is worth doing anyway.

So where is Ocean Buffer Project now? It sits in the middle space between experiment and institution. It is no longer just a private idea, but it is not yet the fully built hub it is heading towards either. The land is being prepared, volunteers are beginning to come on board, governance and safeguarding are being put in place. The algae trials are still teaching hard lessons, the first event has happened, the podcast has found a more honest shape. The wider marine sector in Cornwall is starting to take notice. In other words: the project has moved beyond possibility and into construction. Not finished, not certain, but happening!

Ocean Buffer Project is not only about carbon, algae or even the future hub itself. It is also about what it looks like when someone tries to build a form of climate action that ordinary people can approach without needing a laboratory, a fortune or a permission slip from the usual gatekeepers. A few jars on a windowsill have become a field, a public event, a volunteer invitation and a growing body of trial-and-error knowledge. That is modest in scale compared with the size of the climate crisis. It is also, in its own way, radical.