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)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Dinoflagellate Ceratium extensum (Photo : Sophie Marro)
Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)
Colony of salps Salpa fusiformis (Photo : Fabien Lombard)
Acantharia (Photo : Fabien Lombard)
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)
Dinoflagellate Ceratium falcatum (Photo : Sophie Marro)
Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)
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)
Carte bathymétrique mondiale
Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)
Carte bathymétrique de la Mer Méditerranée
The various components of a profiling float type PROVOR
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)
Ostracodes (Photo : Fabien Lombard)
