Instrumented buoy (Photo : Emilie Diamond)

Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.

Annelid worm (Photo : Fabien Lombard)

Satellite observation (GEOS-12) of Hurricane Katrina in August 2005 in the Gulf of Mexico - Source : NASA-NOAA

Instrumented buoy (Photo : David Luquet)

Ctenaria Lampetia pancerina  (Photo : Fabien Lombard)

Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)

Instrumented buoy (Photo : Emilie Diamond)

Jellyfish Rhizostoma pulmo  (Photo : Fabien Lombard)

Instrumented buoy (Photo : David Luquet)

Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)

Remote-controlled sailboat

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)

Trimaran of INSU

Acantharia (Photo : Fabien Lombard)

Instrumented buoy (Photo : David Luquet)