Quizz marine phytoplankton

Coccolithophore (Photo : Sophie Marro)

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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.

Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)

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Siphonophores - The longest animals on the planet
Cousins of corals, siphonophores are colonies of specialized individuals called zoids. Some catch and digest their prey, others swim, or lay eggs or sperm.

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)

Colony of salps Salpa fusiformis (Photo : Fabien Lombard)

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The various components of a profiling float type PROVOR

Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)

Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)

Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)

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Underwater glider

Rosette for collecting seawater samples

Underwater glider (Photo : David Luquet)

Annelid worm (Photo : Fabien Lombard)

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

Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)

Dinoflagellate Ceratium falcatum (Photo : Sophie Marro)