AUTHOR=Grande Valentina , Angeletti Lorenzo , Prampolini Mariacristina , Castellan Giorgio , Dalla Valle Giacomo , Fraschetti Simonetta , Basso Daniela , Berov Dimitar , Bracchi Valentina A. , Cardone Frine , Chimienti Giovanni , Falace Annalisa , Galil Bella , Mastrototaro Francesco , Salomidi Maria , Savini Alessandra , Schembri Patrick J. , Todorova Valentina , Taviani Marco , Foglini Federica TITLE=CoDeMap: a classification scheme for benthic habitats from the coast to the deep sea in the Mediterranean and Black Sea JOURNAL=Frontiers in Marine Science VOLUME=Volume 12 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2025.1663369 DOI=10.3389/fmars.2025.1663369 ISSN=2296-7745 ABSTRACT=The spatial representation of benthic habitats is essential across various applications, such as biodiversity monitoring, ecosystem management and conservation, and maritime spatial planning. In this context, classification schemes provide a universally understandable framework to characterize and chart the seafloor. This work introduces the Coast to Deep Mapping (CoDeMap) classification scheme for benthic habitats from the coast to the deep-sea environments. It consists of three main components (Morphology, Substrate and Biology) and it is conceived as a practical tool for users from various backgrounds who need to organize and interpret marine observational data, as well as characterize and map seafloors. While primarily developed for the Mediterranean Sea and the Black Sea, CoDeMap serves as a foundational framework that can be adapted to address any current or future similar request worldwide.