Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
Tunicata Pyrosoma (Photo : Fabien Lombard)
Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)
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)
Annelid worm (Photo : Fabien Lombard)
Gelatinous plankton Mneniopsis (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)
Rosette for collecting seawater samples
Ceratium - Capter la lumière avec ses doigts
Ceratium appartient à l'immense groupe des dinoflagellés.
Copepode Coryceide (Photo : Fabien Lombard)
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
Appendiculaires - Ils vivent dans leurs filets
L’appendiculaire, proche ancêtre des vertébrés, fabrique des logettes aux filtres délicats à la fois résidence et filet de pêche.
Profiling float (Photo : David Luquet)
Instrumented buoy (Photo : Emilie Diamond)
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.
Dinoflagellate Ceratium arietinum var arietinum (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
