Sea Urchin - Planktonic Origins
Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.
Acantharia (Photo : Fabien Lombard)
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)
Acantharia (Photo : Fabien Lombard)
Larva of decapod crustacean (Photo : Fabien Lombard)
The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Drifting profiling floats in the Atlantic
Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)
Colony of dinoflagellates Ceratium hexacanthum. In the video, one can observe the movement of the flagella. (Video : Sophie Marro)
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.
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)
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Surface chlorophyll a concentration in the global ocean.
Instrumented buoy (Photo : Emilie Diamond)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
Villefranche-sur-Mer in stormy weather, winter 2011 - Photo : J.-M. Grisoni
Coccolithophore (Photo : Sophie Marro)
Quizz zooplankton
This quizz is about the concepts covered in the topic : zooplancton marin.
