Instrumented buoy (Photo : David Luquet)

Ctenaria Beroe ovata  (Photo : Fabien Lombard)

Radiolarians  (Photo : Fabien Lombard)

Dinoflagellate Ceratium extensum (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)

Squid larva (Photo : Fabien Lombard)

Jellyfish Pelagia noctiluca  (Photo : Fabien Lombard)

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Acantharia (Photo : Fabien Lombard)

Copepode Coryceide  (Photo : Fabien Lombard)

Dinoflagellate Ceratium falcatum (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)

Tunicata Pyrosoma  (Photo : Fabien Lombard)

Underwater glider (Photo : David Luquet)

Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)

Gelatinous plankton salpes and Beroe (Photo : Fabien Lombard)

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