Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Instrumented buoy (Photo : David Luquet)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Tunicata Pyrosoma (Photo : Fabien Lombard)
Dinoflagellates Ceratium platycorne var platycorne (Photo : Sophie Marro)
Acantharia (Photo : Fabien Lombard)
The various components of a profiling float type PROVOR
Dinoflagellate Ceratium candelabrum var depressum (Photo : Sophie Marro)
Vue sous-marine d'un groupe de mésocosmes (© Stareso)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Appendiculaires - Ils vivent dans leurs filets
L’appendiculaire, proche ancêtre des vertébrés, fabrique des logettes aux filtres délicats à la fois résidence et filet de pêche.
Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)
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.
This video describes how to perform the Ludion experiment and explains the physical processes involved.
