Velella - Planktonic Vessels Colonies of polyps transported by prevailing winds, velella drift at the surface of warm seas.
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
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.
Acantharia(Photo : Fabien Lombard)
Dinoflagellate Ceratium extensum(Photo : Sophie Marro)
