Siphonophore (Photo : Fabien Lombard)
Dinoflagellate Ceratium furca (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.
Surface chlorophyll a concentration in the Mediterranean Sea.
Instrumented buoy (Photo : David Luquet)
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)
Ciliate (Photo : Fabien Lombard)
Underwater glider (Photo : David Luquet)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Instrumented buoy (Photo : Emilie Diamond)
Profiling float (Photo : David Luquet)
Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)
Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)
Instrumented buoy (Photo : David Luquet)
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. During the austral summer, the amount of chlorophyll a is so low that the water becomes deep blue, almost purple. (Photo : Joséphine Ras)
Illustration in synthesized images of the seasons of the ocean: a year from the Antarctic - Animation Clement Fontana
Cténophores - Orgie de couleurs
Vagues de lumière iridescentes, à l'affût de proies, voici les cténophores.
