DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of Ceratium spp. This genus is characterized by having hollow horns which assist in floatation. They also possess two flagella which are used for self propulsion. Red tide is due to certain species of dinoflagellates that contain neurotoxins. Magnification: x80 when shortest axis printed at 25 millimetres.
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