Dissolved oxygen - mon océan et moi

Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)

The research vessel "James COOK"

Stickers & Goodies

Instrumented buoy (Photo : David Luquet)

Acantharia (Photo : Fabien Lombard)

Dinoflagellate Ceratium falcatum (Photo : Sophie Marro)

Carte bathymétrique de la Mer Méditerranée

Diatom genus Rhizosolenia (Photo : Sophie Marro)

Diatom genus Coscinodiscus (Photo : Sophie Marro)

PLAY ANIMATION

Drifting profiling floats in the Atlantic

Profiling float (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)

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)