Les Dinoflagellés - Ceratium gravidum

Carte de la camapagne du navire oceanographique James COOK

Le trajet du bateau sur fond couleur de la mer.

LANCER LA VIDEO

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)

Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)

PLAY ANIMATION

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

Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.

Siphonophores Forskalia formosa (Photo : Fabien Lombard)

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

Tunicata Pyrosoma (Photo : Fabien Lombard)

Copepode Coryceide (Photo : Fabien Lombard)

PLAY VIDEO

Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)

Colony of salps Salpa fusiformis (Photo : Fabien Lombard)

PLAY VIDEO

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.

Stickers & Goodies

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

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)

Underwater glider (Photo : David Luquet)

PLAY VIDEO

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