Instrumented buoy (Photo : David Luquet)
Embryos and larvae
Drifting in the currents, embryos and larvae perpetuate the species and are food for multitudes.
This video describes how to perform the Ludion experiment and explains the physical processes involved.
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.
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)
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
Average chlorophyll concentration in the surface ocean (from mi-September 1997 to August 2007) from the ocean color sensor SeaWiFS (NASA). Subtropical gyres, in the center of the oceanic basins, are characterized by very low concentrations of chlorophyll a (dark blue) - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Appendicularia Oikopleura dioica (Photo : Fabien Lombard)
Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Instrumented buoy (Photo : Emilie Diamond)
Appendiculaires - Ils vivent dans leurs filets
L’appendiculaire, proche ancêtre des vertébrés, fabrique des logettes aux filtres délicats à la fois résidence et filet de pêche.