Jellyfish Rhizostoma pulmo (Photo : Fabien Lombard)
Dinoflagellate Ceratium teresgyr (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)
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)
Coccolithophore (Photo : Sophie Marro)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Ciliate (Photo : Fabien Lombard)
Crab Zoea larva (Photo : Fabien Lombard)
Larva of decapod crustacean (Photo : Fabien Lombard)
Annelid worm (Photo : Fabien Lombard)
Diatom genus Hemiaulus (Photo : Sophie Marro)
Dinoflagellate Ceratium extensum (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Siphonophores (Photo : Fabien Lombard)
Illustration in synthesized images of the seasons of the ocean: a year from the Arctic - Animation Clement Fontana
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
