Diatoms - Life in glass houses Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
Dinoflagellate Ceratium arietinum var arietinum (Photo : Sophie Marro)
Diatom species Odontella mobiliensis(Photo : Sophie Marro)