Quizz marine phytoplankton

Tuniciers : Pyrosome (crédit photo : Fabien Lombard)

Tunicata Pyrosoma (Photo : Fabien Lombard)

Ciliate (Photo : Fabien Lombard)

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

Instrumented buoy (Photo : David Luquet)

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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.

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The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.

Ostracodes (Photo : Fabien Lombard)

Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

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Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)

Dinoflagellate Ceratium praelongum (Photo : Sophie Marro)

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

Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.

Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)

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

Ctenaria Lampetia pancerina (Photo : Fabien Lombard)

Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)

Dinoflagellate Ceratium extensum (Photo : Sophie Marro)

Siphonophores Forskalia formosa (Photo : Fabien Lombard)