A year from the Arctic

he seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean

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The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.

Diatom genus Hemiaulus (Photo : Sophie Marro)

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Drifting profiling floats in the Atlantic

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)

Instrumented buoy (Photo : David Luquet)

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Underwater glider

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

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

Krill (Photo : Fabien Lombard)

Colony of salps Salpa fusiformis (Photo : Fabien Lombard)

Préparation des mésocosmes sur le ponton du laboratoire d'Océanographie de Villefranche lors de l'expérience menée en rade de Villefranche en février 2013 (© L. Maugendre, LOV)

Diatom genus Rhizosolenia (Photo : Sophie Marro)

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Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.

Remote-controlled sailboat

Appendicularia Oikopleura dioica (Photo : Fabien Lombard)

Underwater glider (Photo : David Luquet)

Instrumented buoy (Photo : Emilie Diamond)

Ctenaria Beroe ovata (Photo : Fabien Lombard)