The research vessel "James COOK"
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)
Instrumented buoy (Photo : David Luquet)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)
Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)
Satellite observation (GEOS-12) of Hurricane Katrina in August 2005 in the Gulf of Mexico - Source : NASA-NOAA
Ctenaria Beroe ovata (Photo : Fabien Lombard)
Surface chlorophyll a concentration in the global ocean.
Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
Acantharia (Photo : Fabien Lombard)
Diatoms - Life in glass houses
Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.
Siphonophore Forskalia formosa (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)
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
Gelatinous plankton salpes and Beroe (Photo : Fabien Lombard)
Instrumented buoy (Photo : Emilie Diamond)
Instrumented buoy (Photo : David Luquet)
