Cochlodinium faurei is a marine dinoflagellate belonging to the family Gymnodiniaceae, a group of unarmoured single-celled phytoplankton found in coastal and oceanic waters worldwide. Like other members of the genus Cochlodinium, this species is a photosynthetic protist that can form dense blooms in nutrient-enriched coastal waters. Dinoflagellates of this genus are characterised by their helical swimming pattern and transverse flagellum housed in a distinctive grooved girdle, with C. faurei displaying the rounded cell morphology typical of the group. The species has been documented from coastal waters of Brazil and other tropical and warm-temperate marine environments. Some Cochlodinium species are notorious for producing harmful algal blooms that can cause fish kills and respiratory irritation in humans, though the specific toxicity profile of C. faurei has not been definitively established in the scientific literature. The species is Not Evaluated on the IUCN Red List, as assessments are not routinely conducted for marine microalgae. Cochlodinium faurei plays ecological roles as a primary producer in marine food webs, contributing to carbon fixation and serving as a food source for zooplankton, bivalves, and other filter feeders. Database records listing Norway and Sweden among its countries reflect a data artifact; the species' documented distribution is centred on tropical and subtropical marine zones rather than cold Scandinavian waters.