Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.
Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)
Dinoflagellate Ceratium azoricum (Photo : 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)
Surface chlorophyll a concentration in the global ocean.
Diatom genus Chaetoceros (Photo : Sophie Marro)
Copepode Sapphirina iris (Photo : Fabien Lombard)
Copepode Coryceide (Photo : Fabien Lombard)
Ctenaria Eucharis multicornis (Photo : Fabien Lombard)
Les Dinoflagellés - Ceratium hexacanthum
chaîne de Ceratium hexacanthum qui restent les uns à la suites des autres au fur et à mesure des divisions.
Le mouvement des flagelles est bien visible.
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Instrumented buoy (Photo : David Luquet)
Annelid worm (Photo : Fabien Lombard)
Profiling float (Photo : David Luquet)
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)
