Surface chlorophyll a concentration in the global ocean.
Les Dinoflagellés - Ceratium hexacanthum
chaîne de Ceratium hexacanthum qui restent les uns à la suites des autres au fur et à mesure des divisions.
Le mouvement des flagelles est bien visible.
Diatom species Odontella mobiliensis (Photo : Sophie Marro)
Ctenaria Lampetia pancerina (Photo : Fabien Lombard)
Instrumented buoy (Photo : Emilie Diamond)
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)
Dinoflagellate Ceratium paradoxides (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Siphonophore (Photo : Fabien Lombard)
Cténophores - Orgie de couleurs
Vagues de lumière iridescentes, à l'affût de proies, voici les cténophores.
Acantharia (Photo : Fabien Lombard)
Dinoflagellate Ceratium furca (Photo : Sophie Marro)
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. During the austral summer, the amount of chlorophyll a is so low that the water becomes deep blue, almost purple. (Photo : Joséphine Ras)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
Annelid worm (Photo : Fabien Lombard)
