This article evaluates the implementation of the pedagogical model by Schio and Reis (2024), aimed at promoting ocean citizenship within basic education. The evaluation is based on a pilot project from the 2021/2022 school year, which involved 543 students, aged 10 to 11, from 10 Blue Schools located along the Portuguese coast. This paper reports on phases 3 and 4 of the Design-Based Research cycle, corresponding to the implementation and evaluation phases of the pedagogical model. Preliminary results allowed us to verify the emergence of new knowledge, skills, values, critical thinking and attitudes, reflecting the development of ocean citizenship competencies among students. These outcomes affirm the model’s applicability and its potential to seamlessly integrate ocean citizenship into the basic education curriculum. However, it was observed that the activism dimension requires additional emphasis. Further testing in diverse educational settings is crucial to refine the model, adjust to local nuances and maximise its impact on nurturing future generations committed to ocean sustainability.
