About Alliga

An ocean worth protecting

Living on the Basque coast of France, we have witnessed the slow degradation of our coastline: plastic pollution, waste, erosion, and loss of biodiversity. At a global level, little has been done to protect and valorize the coastal areas that millions of us depend on.

Durable and viable solutions to restore our oceans are an environmental and socio-economic necessity. Seaweed is an under-valued but indispensable resource in achieving these goals. We believe that the numerous applications of this strategic resource (costal and biodiversity resilience, health, energy, food, space, construction, etc.) will transform the management of our oceans.

Seaweed coastline
underwater seaweed from above
Seaweed farm Zanzibar

A global vision for seaweed

Alliga will accelerate the production of organic seaweed and maximize the associated socio-economic and environmental opportunities. 

Your support improves ocean conservation through increasing the global production of organic seaweed.


Step 01.
Select your farm

Select and support a unique Alliga farm, aligning with your business vision.

Step 02.
Follow the progress

Watch your seaweed grow and track  your farm’s  and community progress.

Step 03.
Generate results

Measure your impact through regular updates and tailored reports.

Step 04.
Secure your supply

Access your organic seaweed supply at a competitive price.

Meet the founder

Antoine Erwes

Antoine Erwes


What do you get from mixing a passion for the oceans, an appetite for foreign languages, and a background in luxury management? 

You create a catalyst like me, who thrives on creating new opportunities and pushing innovation to improve businesses and our planet.

More than a project, Alliga is my contribution in propelling the organic seaweed industry into the future.

Creativity 91%
Team Spirit 85%
Challenger 79%
Determination 100%

Our advisory board

Nancy Dyste Christiano

CEO - Pacwest Ventures

Isabelle de Cremoux

CEO - Seventure

Vincent Doumeizel

Senior Advisor - UN Global Compact & Safe seaweed coalition

Dr. Helen Fitton

Director - Phycosolutions

Tony Haymet

Emeritus Director and Vice Chancellor Scipps Institution of Oceanography

Catherine Jadot

Program lead - Ocean visions

Eric de Quatrebarbes

Head of Europe Cluster Business Unit Executive Vice President - Capgemini

Wei Zhang

Founding Director - Flinders Center for Marine Bioproducts Development, Flinders University

Join our community

Reach out and let's chat!