Quizz marine phytoplankton

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)

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

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

Foraminifera Ruber (Photo : Fabien Lombard)

Jellyfish Pelagia noctiluca (Photo : Fabien Lombard)

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Plankton
Plankton are a multitude of living organisms adrift in the currents.Our food, our fuel, and the air we breathe originate in plankton.

Underwater glider (Photo : David Luquet)

Larva of decapod crustacean (Photo : Fabien Lombard)

Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Instrumented buoy (Photo : David Luquet)

Dinoflagellate Ceratium extensum (Photo : Sophie Marro)

Ctenaria Beroe ovata (Photo : Fabien Lombard)

Ctenaria Eucharis multicornis (Photo : Fabien Lombard)

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Diatoms - Life in glass houses
Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.

Instrumented buoy (Photo : David Luquet)

Ostracodes (Photo : Fabien Lombard)

Dinoflagellate Ceratium azoricum (Photo : Sophie Marro)