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 tripos (Photo : Sophie Marro)
Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
Sea Urchin - Planktonic Origins
Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. During the austral summer, the amount of chlorophyll a is so low that the water becomes deep blue, almost purple. (Photo : Joséphine Ras)
Carte bathymétrique de la Mer Méditerranée
Dinoflagellate Ceratium azoricum (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
Dinoflagellate Ceratium carriense var volans (Photo : Sophie Marro)
Dinoflagellate Ceratium furca (Photo : Sophie Marro)
Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)
Gelatinous plankton Pelagia and Ctenophores (Photo : Fabien Lombard)
Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
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)
Remote-controlled sailboat
Carte bathymétrique mondiale
