Santorini Blue Loop: a circular economy for an island built on visitors

• November 10, 2026

Santorini is one of the most visited islands in the Mediterranean, and every environmental intervention there has to start from that fact. Waste arrives with people. Seasonality squeezes the pressure into a few months. The island’s capacity to process what gets left behind is fixed, and the volume isn’t.

The Santorini Blue Loop Living Lab is PHAROS’s replication site in the Cyclades, coordinated by Impact Hub Athens, which designed its framework. It draws on the REMEDIES for Ocean and VERNE initiatives alongside PHAROS, and its participants include research projects, local organisations, schools, residents, the Municipal Port Authority of Thira and local fishers.

The lab is described as a living system of collaboration, learning and action: a platform for dialogue and co-creation where stakeholders define problems, design solutions, pilot actions and evaluate the results. The sequence matters. Problem definition sits with the island, not with the consortium.

Less marine pollution, circular economy, sustainable practice sit inside a bioregional frame linking water, energy, food and waste

Stated aims are to reduce marine pollution, promote the circular economy and develop sustainable practices on the island. The approach is bioregional, linking marine systems with water, energy, food and waste management rather than treating the sea as a separate domain.

On a small island that is not an abstraction. Water supply, energy demand, food logistics and waste disposal are all shaped by the same tourist season, and a measure that cuts marine litter by raising energy use hasn’t necessarily improved anything. Longer term, the ambitions are to make Santorini a model for resilient island development and to build community stewardship.

Three thematic routes

Activity is organised along three routes:

1. Sea – marine pollution, litter prevention and marine ecosystem awareness, including Posidonia seagrass meadows.
2. Sustainable tourism – the pressure source and, necessarily, part of the solution.
3. Terrestrial biodiversity – the island’s agricultural landscape, both a cultural asset and a land-use question.

Putting viticulture in a marine restoration project looks like scope creep until you think about run-off, soil retention and the shared water table. It is also how a project earns standing with residents whose livelihoods aren’t maritime.

What the lab actually does with plastic

The central tool is the Plastic Lab: hands-on sessions where participants learn how discarded plastic gets collected, sorted and processed into new objects. Plastic processing demonstrations run alongside beach and underwater clean-ups.

That design choice is worth drawing out. A clean-up removes material and teaches almost nothing about where it came from. A clean-up followed by sorting and processing makes the waste stream legible. Participants see which polymers dominate, what contamination does to recyclability, and how much material one usable object actually takes. That last figure is usually the sobering one, and it argues for prevention better than any awareness campaign.

Programmes running through the site

Several PHAROS programmes reach the island through the lab: Fisher Guardians for the fishing community, the Blue Schools Network for schools, and the Citizen Litter Entrepreneurs programme for people who want to build something out of recovered material. Planned actions include beach and underwater clean-ups, school workshops and marine ecosystem awareness sessions.

This is the replication model working as intended. Santorini doesn’t design a fisher programme from scratch. It adapts one developed and tested at the demonstration sites, then contributes its own experience back.

Where the model is strongest, and where it is exposed

Institutional breadth is the strength. With the Municipal Port Authority, local fishers, schools and residents inside one structure, a decision about where waste containers sit in a harbour can actually be implemented rather than only recommended.

The exposure is seasonal and demographic. An island economy running at tourist intensity for part of the year has little institutional attention to spare in those months and a workforce that partly leaves afterwards. Continuity of participation, the same people coming back season after season, is harder here than at a site with a stable resident working population. Around 30 people took part at the lab’s launch. That is a starting cohort, and the number worth tracking is how many are still contributing in two years.

A measurement gap common to litter work applies here too. Quantities collected are easy to report and tell you little, since a good year for clean-ups may just be a bad year for litter. The indicators that mean something are composition over time and reductions at the source, and those need baselines the lab is still building.