Phalacroma rotundatum is a rare cosmopolitan heterotrophic dinoflagellate. This species. included in the IOC-UNESCO Taxonomic Reference List of Harmful Microalgae. may be a diarrhetic shellfish poisoning (DSP) toxin vector. https://www.ngetikin.com/hot-mega-Ventilationstejp-50-mm-Fresh-flash-find/