Foraminifera Ruber (Photo : Fabien Lombard)
Les Diatomées - Bacillaria
Colonie de diatomées du genre Bacillaria dont les individus peuvent glisser les uns par rapport aux autres.
Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)
Copepode Sapphirina iris (Photo : Fabien Lombard)
Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
Colony of salps Salpa fusiformis (Photo : Fabien Lombard)
Elephant seal equipped with a sensor
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)
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)
This video describes how to perform the Ludion experiment and explains the physical processes involved.
Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
Acantharia (Photo : Fabien Lombard)
Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Sea Urchin - Planktonic Origins
Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.
