In Guerande salt, none of the three most represented genera by metagenomics (Halobacterium, Halorhabdus and Haloplanus) were identified on culture media. In La Baleine coarse sea and HâlenMôn salts, the genera isolated were minor actors of the corresponding metagenomic diversity. Besides, two salts used in the pyrosequencing experiment did not give rise to colony growth: Palm Island black and Dead Sea salts.