Animation of the biosphere obtained from the ocean color sensor SeaWiFS
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
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)
Remote-controlled sailboat
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Dinoflagellate Ceratium extensum(Photo : Sophie Marro)
Ctenaria Beroe ovata(Photo : Fabien Lombard)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Colony of salps Salpa fusiformis(Photo : Fabien Lombard)
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)
