Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Ctenaria Beroe ovata (Photo : Fabien Lombard)
Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)
Siphonophores - The longest animals on the planet
Cousins of corals, siphonophores are colonies of specialized individuals called zoids. Some catch and digest their prey, others swim, or lay eggs or sperm.
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Diatom genus Chaetoceros (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)
Siphonophores (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
The research vessel "Marion Dufresne"
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)
Diatom species Odontella mobiliensis (Photo : Sophie Marro)
Surface chlorophyll a concentration in the Mediterranean Sea.
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
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.