A year from the Arctic

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The profiling float

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Diatoms - Life in glass houses
Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.

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)

Rosette used to collect seawater samples during a scientific cruise in the South Pacific Ocean. (Photo : Joséphine Ras)

Ostracodes (Photo : Fabien Lombard)

Mollusk (Photo : Fabien Lombard)

Dinoflagellate Ceratium fusus (Photo : Sophie Marro)

Stickers & Goodies

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Embryos and larvae
Drifting in the currents, embryos and larvae perpetuate the species and are food for multitudes.

Dinoflagellate Ceratium extensum (Photo : Sophie Marro)

Dinoflagellate Ceratium macroceros var macroceros (Photo : Sophie Marro)

Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)

Jellyfish Aequorea aequorea (Photo : Fabien Lombard)

Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)

Préparation des mésocosmes sur le ponton du laboratoire d'Océanographie de Villefranche lors de l'expérience menée en rade de Villefranche en février 2013 (© L. Maugendre, LOV)

Dinoflagellate Ceratium carriense var volans (Photo : Sophie Marro)

Surface chlorophyll a concentration in the global ocean.