This article proposes an interpretation of the concept of territorial dynamics of knowledge by integrating consumers into the industry-research-administration triptych in the case of the seafood industry. Recent models associating consumers and producers are part of the knowledge and innovation economy. The article is motivated by two questions: Does the seafood industry meet the characteristics of knowledge-based economies? Is this knowledge shared with consumers? While disruptive innovations are rare, incremental improvements are frequent in this industry. This article is based on a consumer survey carried out in 2021 on the French market. The survey results, where consumers are separated according to their department of residence (coastal and non-coastal), support the hypothesis that geographical proximity strongly impacts knowledge of seafood products. Indeed, the results reveal that coastal households tend to have differentiated preferences for seafood products compared to non-coastal households. They pay more attention to the provenance (local and national) and the environmental impact of the seafood they consume. An explicit difference in knowledge between coastal and non-coastal consumers can explain this difference in expressed preferences. Indeed, our results show that coastal consumers tend to have a higher level of subjective and objective knowledge regarding the seafood sector than non-coastal consumers. They tend to rate themselves as more expert, reflected in a greater knowledge of labelling regulations and the link between wild fisheries and aquaculture production. Based on these results, the discussion focuses on two issues: the environmental impact of fishing methods and trade regulations. While coastal households have a better knowledge of these two subjects, controversy is present.