Acantharia (Photo : Fabien Lombard)
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)
Corail profond : Pour un niveau d'acidité prévu pour la fin du siècle, une diminution de construction de son squelette de 50 % a été mesurée chez le corail d'eaux froides Lophelia pertusa. Les communautés coralliennes d'eaux froides abritent un grand nombre d'espèces. Une diminution de la croissance des coraux constructeurs par l'acidification des océans peut menacer l'existence même de ces édifices. © C. Maier, LOV
Instrumented buoy (Photo : David Luquet)
Jellyfish Pelagia noctiluca (Photo : Fabien Lombard)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
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)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Illustration in synthesized images of the seasons of the ocean: a year from the Antarctic - Animation Clement Fontana
Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)
Instrumented buoy (Photo : Emilie Diamond)
Instrumented buoy (Photo : David Luquet)
Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)
Larva of decapod crustacean (Photo : Fabien Lombard)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Diatom species Odontella mobiliensis (Photo : Sophie Marro)
Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)