Ostracodes  (Photo : Fabien Lombard)

Jellyfish Rhizostoma pulmo  (Photo : Fabien Lombard)

Copepode Coryceide  (Photo : Fabien Lombard)

Diatom genus Rhizosolenia (Photo : Sophie Marro)

Remote-controlled sailboat

Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)

Les mésocosmes déployés dans la rade de Villefranche en face de l'observatoire océanologique de Villefranche (© L. Maugendre, LOV)

Siphonophore Forskalia formosa (Photo : Fabien Lombard)

Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)

Underwater glider (Photo : David Luquet)

Colony of salps Salpa fusiformis (Photo : Fabien Lombard)

Instrumented buoy (Photo : David Luquet)

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)