Jigsaw Puzzle : Velella - Planktonic Vessels

Espèce du genre Hemiaulus - Photo Sophie Marro

Diatom genus Hemiaulus (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.

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

Gelatinous plankton Mneniopsis (Photo : Fabien Lombard)

Surface chlorophyll a concentration in the Mediterranean Sea.

Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni

Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)

Jellyfish Aequorea aequorea (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)

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Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.

Foraminifera (Photo : Fabien Lombard)

Instrumented buoy (Photo : Emilie Diamond)

Diatom genus Rhizosolenia (Photo : Sophie Marro)

Siphonophore Forskalia formosa (Photo : Fabien Lombard)

Krill (Photo : Fabien Lombard)

Satellite observation (GEOS-12) of Hurricane Katrina in August 2005 in the Gulf of Mexico - Source : NASA-NOAA

Dinoflagellate Ceratium falcatum (Photo : Sophie Marro)

Remote-controlled sailboat