Quizz the ocean seasons

Déploiement dun flotteur - Photo JJ. Pangrazi

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Acantharia (Photo : Fabien Lombard)

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)

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Pleurobrachia
Propulsées par huit rangées de peignes, les groseilles de mer déploient deux longs tentacules pour pêcher des crustacés.

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Cténophores - Orgie de couleurs
Vagues de lumière iridescentes, à l'affût de proies, voici les cténophores.

Instrumented buoy (Photo : Emilie Diamond)

Instrumented buoy (Photo : David Luquet)

Acantharia (Photo : Fabien Lombard)

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Mollusk (Photo : Fabien Lombard)

Profiling float (Photo : David Luquet)

Carte bathymétrique de la Mer Méditerranée

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Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)

Colony of salps Salpa fusiformis (Photo : Fabien Lombard)

Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)

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)

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Illustration in synthesized images of the seasons of the ocean: a year from the Antarctic - Animation Clement Fontana

Dinoflagellate Ceratium arietinum var arietinum (Photo : Sophie Marro)