Velella - Planktonic Vessels Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Instrumented buoy (Photo : Emilie Diamond)
Surface chlorophyll a concentration in the Mediterranean Sea.
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. Duringthe austral summer,the amount of chlorophyllais so low thatthe water becomesdeepblue,almostpurple. (Photo : Joséphine Ras)
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.
