Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Coccolithophore (Photo : Sophie Marro)
Underwater glider (Photo : David Luquet)
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Foraminifera (Photo : Fabien Lombard)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)
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)
Jellyfish Aequorea aequorea (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)
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 : David Luquet)
Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)
Underwater glider (Photo : David Luquet)
