The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Instrumented buoy (Photo : David Luquet)
Mollusk (Photo : Fabien Lombard)
Siphonophores (Photo : Fabien Lombard)
Appendicularia Oikopleura dioica (Photo : Fabien Lombard)
Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.
Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)
Remote-controlled sailboat
Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)
Instrumented buoy (Photo : Emilie Diamond)
Acantharia (Photo : Fabien Lombard)
Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
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)
Radiolarians (Photo : Fabien Lombard)