The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Colony of dinoflagellates Ceratium hexacanthum. In the video, one can observe the movement of the flagella. (Video : Sophie Marro)
Instrumented buoy (Photo : Emilie Diamond)
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.
Average chlorophyll concentration in the surface ocean (from mi-September 1997 to August 2007) from the ocean color sensor SeaWiFS (NASA). Subtropical gyres, in the center of the oceanic basins, are characterized by very low concentrations of chlorophyll a (dark blue) - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
The various components of a profiling float type PROVOR
Carte bathymétrique mondiale
Jellyfish Pelagia noctilica (Photo : Fabien Lombard)
Diatom genus Chaetoceros (Photo : Sophie Marro)
Dinoflagellate Ceratium extensum (Photo : Sophie Marro)
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Diatom genus Rhizosolenia (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Diatom genus Cylindrotheca (Photo : Sophie Marro)
Ciliate (Photo : Fabien Lombard)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
