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 reflexum (Photo : Sophie Marro)
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)
Acantharia (Photo : Fabien Lombard)
Carte de la camapagne du navire oceanographique James COOK
Le trajet du bateau sur fond couleur de la mer.
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)
Underwater glider (Photo : David Luquet)
Krill (Photo : Fabien Lombard)
Squid larva (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
Radiolarians (Photo : Fabien Lombard)
This video describes how to perform the Ludion experiment and explains the physical processes involved.
Copepode Coryceide (Photo : Fabien Lombard)
Cténophores - Orgie de couleurs
Vagues de lumière iridescentes, à l'affût de proies, voici les cténophores.
Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
