oceanimonas oceanimonas the oceanimonas are a genus of marine bacteria. they are, like all proteobacteria, gram-negative. the rod-shaped, motile organisms are aerobic and chemoorganotroph. oceanimonas scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: aeromonadales family: aeromonadaceae genus: oceanimonascorrig. brown et al. 2001 type species oceanimonas doudoroffii species o. baumannii o. doudoroffii o. marisflavi o. smirnovii