Puzzle Ocean Seasons : Bloom

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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.

Mollusk (Photo : Fabien Lombard)

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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.

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

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Ptéropodes - Mollusques qui nagent
Les papillons des mers construisent de fragiles coquilles. Résisteront-elles à l’acidification des océans?

Vue sous-marine d'un groupe de mésocosmes (© Stareso)

Annelid worm (Photo : Fabien Lombard)

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

Radiolarians (Photo : Fabien Lombard)

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

Remote-controlled sailboat

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

Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)

Gelatinous plankton salpes and Beroe (Photo : Fabien Lombard)

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)

Instrumented buoy (Photo : David Luquet)

Diatom genus Chaetoceros (Photo : Sophie Marro)