Quizz the ocean seasons

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

Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)

Ctenaria Beroe ovata (Photo : Fabien Lombard)

Diatom genus Cylindrotheca (Photo : Sophie Marro)

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Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)

Instrumented buoy (Photo : Emilie Diamond)

Siphonophores (Photo : Fabien Lombard)

Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)

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Illustration in synthesized images of the seasons of the ocean: a year from the Antarctic - Animation Clement Fontana

Instrumented buoy (Photo : David Luquet)

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

Instrumented buoy (Photo : Emilie Diamond)

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)

Ciliate (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.

Gelatinous plankton Pelagia and Ctenophores (Photo : Fabien Lombard)

Remote-controlled sailboat

Squid larva (Photo : Fabien Lombard)