Pleurobrachia
Propulsées par huit rangées de peignes, les groseilles de mer déploient deux longs tentacules pour pêcher des crustacés.
Ciliate (Photo : Fabien Lombard)
Instrumented buoy (Photo : Emilie Diamond)
Ciliate (Photo : Fabien Lombard)
Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)
Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
Ctenaria Beroe ovata (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)
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
Ctenaria Eucharis multicornis (Photo : Fabien Lombard)
Coccolithophore (Photo : Sophie Marro)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Diatom genus Coscinodiscus (Photo : Sophie Marro)
Jellyfish Pelagia noctilica (Photo : Fabien Lombard)
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
The research vessel "Marion Dufresne"
