In two words
Algorythme
Pioneers of the departmental and Nouvelle‑Aquitaine algae sector, **Algorythme** is the region’s first company entirely dedicated to turning algae into value. From its base in Ars‑en‑Ré on the Île de Ré, Algorythme has been hand‑harvesting macro‑algae since 2016, supplying high‑quality raw material for medical research, cosmetics, thalassotherapy and the agri‑food industry. Our low‑tech, low‑carbon process safeguards the Île de Ré ecosystem and guarantees complete traceability. With Algorythme, you can move your innovations forward alongside a sustainable, environmentally responsible partner.
Committed Harvesters Artisanal algae farmers since 2016
Hélène Jouannet and Tanguy Gauvin chose artisanal algoculture to protect—and unlock—the full potential of Atlantic macro‑algae. Based in the northern canton of Île de Ré, they work every tide in an ecosystem of exceptional purity, ensuring a premium‑grade raw material for industry and research alike.
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Premium Algae Formulation Our Atlantic Seaweeds
Ulva, kelps, Gracilaria, Fucus … Hand‑harvested on the Île de Ré, our six species are dried with a low‑tech, low‑energy process, then offered as flakes, powders or raw whole material. They slot seamlessly into four fields: medical research, nutrition & agri‑food, marine cosmetics, and thalasso & spa. We can also undertake R&D on any Atlantic species of your choice.
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Supplying Exceptional Seaweed Our Expertise
Based on the Île de Ré in France since 2016, we hand‑select our kelps and Gracilaria tide after tide, then dry them using a low‑tech process that preserves their natural richness. Custom particle size, full traceability, and coastal preservation—three key strengths that make Algorythme a trusted partner for your formulations and research.
The ocean is our future Our values
The more seaweed we produce, the more carbon we sequester and oxygen we generate. Our low-tech model minimizes embodied energy, protects the Île de Ré’s intertidal zone, and supports a sustainable coastal economy. Algorythme is committed to passing on a living coastline to future generations—while providing responsibly sourced marine ingredients to our industrial partners.
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Our address Find us
Algorythme
Chemin des Palissiats
17590 Ars en Ré
