microbulbifer marinus microbulbifer marinus microbulbifer marinus is a gram-negative, aerobic bacterium found in marine sediment. its type strain is y215t (=cgmcc 1.10657t =jcm 17211t). microbulbifer marinus scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: alteromonadaceae genus: microbulbifer species: microbulbifer marinuszhang et al. 2012