Quizz marine phytoplankton

Underwater glider (Photo : David Luquet)

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Cténophores - Orgie de couleurs
Vagues de lumière iridescentes, à l'affût de proies, voici les cténophores.

Ctenaria Eucharis multicornis (Photo : Fabien Lombard)

Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)

Crab larva (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)

Vue sous-marine d'un groupe de mésocosmes montrant un plongeur récoltant les pièges à sediment (© Stareso)

Instrumented buoy (Photo : Emilie Diamond)

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Drifting profiling floats in the Atlantic

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Siphonophores - The longest animals on the planet
Cousins of corals, siphonophores are colonies of specialized individuals called zoids. Some catch and digest their prey, others swim, or lay eggs or sperm.

Les mésocosmes attirent les poissons ! (© Stareso)

Radiolarians (Photo : Fabien Lombard)

Jellyfish Leuckaztiara octona (Photo : Fabien Lombard)

Dinoflagellate Ceratium extensum (Photo : Sophie Marro)

Profiling float (Photo : David Luquet)

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

Gelatinous plankton Pelagia and Ctenophores (Photo : Fabien Lombard)

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Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.