Ptéropodes - Mollusques qui nagent
Les papillons des mers construisent de fragiles coquilles. Résisteront-elles à l’acidification des océans?
Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.
Siphonophores (Photo : Fabien Lombard)
Instrumented buoy (Photo : Emilie Diamond)
Diatom species Odontella mobiliensis (Photo : Sophie Marro)
Dinoflagellate Ceratium carriense var volans (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Velella - Planktonic Vessels
Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
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)
Dinoflagellate Ceratium azoricum (Photo : Sophie Marro)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Acantharia (Photo : Fabien Lombard)
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.
Surface chlorophyll a concentration in the Mediterranean Sea.
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
