TAPAS partner, Universit√© de Nantes participated in a professional conference on IMTA systems (Integrated Multi-Trophic Aquaculture) in Rennes, France. The event was a great opportunity for an exchange and discussion between the various actors in the aquaculture sector, such as researchers, professionals, and technical centers, notably on strategic development plan and exosystemic services. Marta Castilla Gavilan presented the TAPAS IMTA experiments with sea urchins and macroalgae.