oceanisphaera sediminis oceanisphaera sediminis oceanisphaera sediminis is a gram-negative, aerobic and motile bacterium from the genus of oceanisphaera which has been isolated from marine sediments from the coast of korea. oceanisphaera sediminis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: aeromonadales family: aeromonadaceae genus: oceanisphaera species: o. sediminis binomial name oceanisphaera sediminisshin et al. 2012 type strain jcm 17329, kacc 15117, tw92, tw93