Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
 
			Siphonophores (Photo : Fabien Lombard)
 
			Dinoflagellate Ceratium fusus (Photo : Sophie Marro)
 
			Dinoflagellate Ceratium furca (Photo : Sophie Marro)
 
			Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)
 
			Elephant seal equipped with a sensor
 
			Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
 
			Larva of decapod crustacean  (Photo : Fabien Lombard)
 
			Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)
 
			Surface chlorophyll a concentration in the Mediterranean Sea.
 
			Instrumented buoy (Photo : David Luquet)
 
			Jellyfish Rhizostoma pulmo  (Photo : Fabien Lombard)
 
			Instrumented buoy (Photo : David Luquet)
 
			
Plankton
Plankton are a multitude of living organisms adrift in the currents.Our food, our fuel, and the air we breathe originate in plankton.
 
 
 
			
	Illustration in synthesized images of the seasons of the ocean: a year from the Arctic - Animation Clement Fontana
 
 
 
 
 
			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)
 
			
Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
 
 
 
 
 
			Diatom genus Hemiaulus (Photo : Sophie Marro)