Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Diatom genus Hemiaulus (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)