Quizz observation of the oceans and seas

Déploiement dun flotteur - Photo JJ. Pangrazi

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Instrumented buoy (Photo : David Luquet)

Rosette for collecting seawater samples

Dinoflagellate Ceratium paradoxides (Photo : Sophie Marro)

Diatom genus Coscinodiscus (Photo : Sophie Marro)

Foraminifera Ruber (Photo : Fabien Lombard)

Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)

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)

Ctenaria Eucharis multicornis (Photo : Fabien Lombard)

Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)

Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)

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)