[dinoflagellate] Karenia bicuneiformis Karenia brevis Karenia brevisulcata Karenia concordia Karenia cristata Karenia digitata Karenia longicanalis Karenia mikimotoi Karenia is a genus of 12 species of dinoflagellates which were formerly included in the genus Gymnodinium. A number of species cause red tides, including Karenia brevis off the...