Protoceratium reticulatum (0.03 mm). This red-tide-forming dinoflagellate is both oceanic and estuarine, temperate and tropical.

Protoceratium reticulatum (0.03 mm). This red-tide-forming dinoflagellate is both oceanic and estuarine, temperate and tropical.
Photographer: Scanning Electron Micrograph, Maria Faust/Smithsonian InstitutionRights holder: Scanning Electron Micrograph, Maria Faust/Smithsonian Institution