Quizz observation of the oceans and seas

Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)

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Drifting profiling floats in the Atlantic

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Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.

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)

Vue sous-marine d'un groupe de mésocosmes (© Stareso)

Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)

Stickers & Goodies

Surface chlorophyll a concentration in the Mediterranean Sea.

Carte bathymétrique mondiale

Dinoflagellate Ceratium fusus (Photo : Sophie Marro)

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Les Diatomées - Bacillaria
Colonie de diatomées du genre Bacillaria dont les individus peuvent glisser les uns par rapport aux autres.

Acantharia (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)