The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
Pelagia - Fearsome Jellyfish
Mauve jellies move in droves, their nasty stings feared by swimmers.
Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)
Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)
Les Dinoflagellés - Ceratium gravidum
Ceratium gravidum dont en voit parfaitement les mouvements d’un des deux flagelles.
Instrumented buoy (Photo : Emilie Diamond)
Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)
Dinoflagellate Ceratium reflexum (Photo : Sophie Marro)
Rosette for collecting seawater samples
Jellyfish Rhizostoma pulmo (Photo : Fabien Lombard)
Diatom genus Rhizosolenia (Photo : Sophie Marro)
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)
Crab Zoea larva (Photo : Fabien Lombard)
Coccolithophore (Photo : Sophie Marro)
Dinoflagellate Ceratium tripos (Photo : Sophie Marro)
Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)
Salpes - La vie enchaînée
Bien que d’apparence primitive, les salpes sont de proches ancêtres des poissons. Lorsque les algues abondent, les salpes prolifèrent en de longues chaînes d’individus clonés.
