MARE integrates three ecosystem-oriented Research Groups - 1. River Basins; 2. Estuaries and Coastal Zones; 3. Open-Ocean and Deep-Sea - since most of the societal challenges and needs for the next decades will have to be addressed in an integrated manner.

Conceptually, four integrative domains of action were identified as core subjects for MARE intervention: Life; Environment and Resources; Technology and Innovation; Information and Society.

MARE’s organizational structure comprises 11 research thematic lines, comprehended in these four integrative domains of action, which are supported by several or all Research Groups, implementing a real interchange of ideas, expertise, methodological approaches, applications and dissemination within the MARE structure.