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)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Instrumented buoy (Photo : David Luquet)
This video describes how to perform the Ludion experiment and explains the physical processes involved.
Underwater glider (Photo : David Luquet)
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)
Siphonophore (Photo : Fabien Lombard)
Instrumented buoy (Photo : Emilie Diamond)
Phronimes - Monstres des tonneaux
Recyclant salpes et méduses, la femelle phronime construit des tonneaux gélatineux et y élève sa progéniture.
Diatom genus Coscinodiscus (Photo : Sophie Marro)
Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)
Squid larva (Photo : Fabien Lombard)
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Colony of salps Salpa fusiformis (Photo : Fabien Lombard)
Diatoms - Life in glass houses
Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.
Dinoflagellate Ceratium paradoxides (Photo : Sophie Marro)
