A long-term ecological research dataset from the marine genetic monitoring programme ARMS-MBON 2020-2021. - Pagnier J; Allcock L; Cancio I; Chatzinikolaou E; Chatzigeorgiou G; Chrismas NAM; Costantini F; Dailianis T; Deneudt K; Díaz de Cerio O; Digenis M; Exter K; et al. (Biodiversity data journal, 2025)