Dinoflagellate Ceratium fusus (Photo : Sophie Marro)
Vue sous-marine d'un groupe de mésocosmes (© Stareso)
Diatom genus Rhizosolenia (Photo : Sophie Marro)
Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Acantharia (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
Dinoflagellate Ceratium furca (Photo : Sophie Marro)
Diatom genus Coscinodiscus (Photo : Sophie Marro)
Mollusk (Photo : Fabien Lombard)
Carte bathymétrique mondiale
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)
Dinoflagellate Ceratium tripos (Photo : Sophie Marro)
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)
Siphonophore (Photo : Fabien Lombard)
Krill (Photo : Fabien Lombard)
Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)
Salpes - La vie enchaînée
Bien que d’apparence primitive, les salpes sont de proches ancêtres des poissons. Lorsque les algues abondent, les salpes prolifèrent en de longues chaînes d’individus clonés.
