Puzzle Phytoplankton : Ceratium arietinum

Cnidaires : Pelagia noctiluca (crédit photo : Fabien Lombard)

Jellyfish Pelagia noctiluca (Photo : Fabien Lombard)

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

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

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

Carte bathymétrique mondiale

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Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.

Instrumented buoy (Photo : David Luquet)

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)

Acantharia (Photo : Fabien Lombard)

Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)

Siphonophores Forskalia formosa (Photo : Fabien Lombard)

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

Mollusk (Photo : Fabien Lombard)

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

Tunicata Pyrosoma (Photo : Fabien Lombard)

Surface chlorophyll a concentration in the Mediterranean Sea.

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Salpes - La vie enchaînée
Bien que d’apparence primitive, les salpes sont de proches ancêtres des poissons. Lorsque les algues abondent, les salpes prolifèrent en de longues chaînes d’individus clonés.

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