Quizz observation of the oceans and seas

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Animation of the biosphere obtained from the ocean color sensor SeaWiFS

Squid larva (Photo : Fabien Lombard)

Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)

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Sea Urchin - Planktonic Origins
Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.

Instrumented buoy (Photo : David Luquet)

Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni

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This video describes how to perform the Ludion experiment and explains the physical processes involved.

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

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Colony of dinoflagellates Ceratium hexacanthum. In the video, one can observe the movement of the flagella. (Video : Sophie Marro)

Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)

Mollusk (Photo : Fabien Lombard)

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)

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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.

Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)

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

Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni

Siphonophores Forskalia formosa (Photo : Fabien Lombard)