mesonia oceanica mesonia oceanica mesonia oceanica is a gram-negative, aerobic, rod-shaped, chemoorganotrophic, slightly halophilic and non-motile bacterium from the genus of mesonia which has been isolated from seawater from the atlantic. mesonia oceanica scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: mesonia species: m. oceanica binomial name mesonia oceanicalucena et al. 2020 type strain iss653