Six french partners (CNES, CNRS, Ifremer, IRD, SHOM and Universités Marines) are collaborating on a new website for getting access to ocean data :
Search for data on http://www.odatis-ocean.fr/en/acces-aux-donnees/ .
Note that the interface is currently in French only, but you should be able to find your way using your favorite online translator.
Source: IODE