Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Larva of decapod crustacean (Photo : Fabien Lombard)
Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)
Diatom species Odontella mobiliensis (Photo : Sophie Marro)
Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)
Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)
Ctenaria Eucharis multicornis (Photo : Fabien Lombard)
Surface chlorophyll a concentration in the Mediterranean Sea.
Vue sous-marine d'un groupe de mésocosmes (© Stareso)
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)
Rosette for collecting seawater samples
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Dinoflagellate Ceratium fusus (Photo : Sophie Marro)
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)
Acantharia (Photo : Fabien Lombard)
Dinoflagellate Ceratium carriense var volans (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)
Ciliate (Photo : Fabien Lombard)
