Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)

Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Teaching sheets

Instrumented buoy (Photo : David Luquet)

Surface chlorophyll a concentration in the global ocean.

Diatom genus Hemiaulus (Photo : Sophie Marro)

Copepode Sapphirina iris  (Photo : Fabien Lombard)

Diatom genus Chaetoceros (Photo : Sophie Marro)

Acantharia (Photo : Fabien Lombard)

Acantharia (Photo : Fabien Lombard)

Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)

Siphonophores Forskalia formosa (Photo : Fabien Lombard)

Dinoflagellate Ceratium paradoxides (Photo : Sophie Marro)

Profiling float (Photo : David Luquet)

Ciliate (Photo : Fabien Lombard) 

Squid larva (Photo : Fabien Lombard)

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)