Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
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)
Remote-controlled sailboat
Colony of salps Salpa fusiformis (Photo : Fabien Lombard)
Ctenaria Eucharis multicornis (Photo : Fabien Lombard)
Copepode Coryceide (Photo : Fabien Lombard)
Foraminifera Orbulina universa and mollusk larva (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
Instrumented buoy (Photo : David Luquet)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Diatom genus Coscinodiscus (Photo : Sophie Marro)
Gelatinous plankton salpes and Beroe (Photo : Fabien Lombard)
Jellyfish Pelagia noctilica (Photo : Fabien Lombard)
Jellyfish Pelagia noctiluca (Photo : Fabien Lombard)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.