oceanisphaera marina oceanisphaera marina oceanisphaera marina is a gram-negative, strictly aerobic, rod-shaped and motile bacterium from the genus of oceanisphaera which has been isolated from a seamount from the western pacific. oceanisphaera marina scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: aeromonadales family: aeromonadaceae genus: oceanisphaera species: o. marina binomial name oceanisphaera marinaliu et al. 2017 type strain cgmcc 1.15923, kacc 18564, strain ym319