Surface chlorophyll a concentration in the Mediterranean Sea.
Surface chlorophyll a concentration in the global ocean.
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Ctenaria Eucharis multicornis (Photo : Fabien Lombard)
Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)
Instrumented buoy (Photo : David Luquet)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Foraminifera Orbulina universa and mollusk larva (Photo : Fabien Lombard)
Ciliate (Photo : Fabien Lombard)
Siphonophores (Photo : Fabien Lombard)
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)
Profiling float (Photo : David Luquet)
Instrumented buoy (Photo : David Luquet)
Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)
Annelid worm (Photo : Fabien Lombard)
