The Collection of Sea Microorganisms, CoSMi, is maintained in the Oceanography Section of the National Institute of Oceanography and Applied Geophysics – OGS and is one of the few Italian collections specialising in marine microalgae. It is part of the largest Italian microbial resource infrastructure, MIRRI.IT, which coordinates the main Italian microbial collections and is the Italian node of the European MIRRI-ERIC infrastructure. CosMi is also part of the World Federation for Culture Collections (WFCC), and the European Culture Collections’ Organisation (ECCO).
It maintains over 100 strains of autotrophic unicellular eukaryotes, isolated mainly from the Gulf of Trieste (northern Adriatic Sea, Mediterranean Sea), including potentially toxic and non-toxic dinoflagellates, diatoms responsible for blooms, coccolithophores, and flagellates, which can represent a source of genetic diversity to be studied and preserved.