marinobacter santoriniensis marinobacter santoriniensis marinobacter santoriniensis is a gram-negative, facultatively anaerobic, non-spore-forming and motile bacterium from the genus of marinobacter which has been isolated from hydrothermal sediments in santorini in greece. marinobacter santoriniensis can metabolize arsenate and arsenite. marinobacter santoriniensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: alteromonadaceae genus: marinobacter species: m. santoriniensishandley et al. 2009 binomial name marinobacter santoriniensis type strain atcc baa-1649, dsm 21262, ncimb 14441, nksg1