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)
Instrumented buoy (Photo : Emilie Diamond)
Diatom genus Cylindrotheca (Photo : Sophie Marro)
Les mésocosmes attirent les poissons ! (© Stareso)
Animation of the biosphere obtained from the ocean color sensor SeaWiFS
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.
Jellyfish Rhizostoma pulmo (Photo : Fabien Lombard)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
Diatom genus Hemiaulus (Photo : Sophie Marro)
Dinoflagellate Ceratium extensum (Photo : Sophie Marro)
Instrumented buoy (Photo : Emilie Diamond)
Surface chlorophyll a concentration in the global ocean.
Mollusk (Photo : Fabien Lombard)
Illustration in synthesized images of the seasons of the ocean: a year from the Arctic - Animation Clement Fontana
Mollusk (Photo : Fabien Lombard)
Colony of dinoflagellates Ceratium hexacanthum. In the video, one can observe the movement of the flagella. (Video : Sophie Marro)
Dinoflagellate Ceratium tripos (Photo : Sophie Marro)
Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
