sphingomonas aestuarii sphingomonas aestuarii sphingomonas aestuarii is a gram-negative and rod-shaped bacteria from the genus of sphingomonas which has been isolated from tidal flat sediments in yeosu in korea. sphingomonas aestuarii scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingomonas binomial name sphingomonas aestuariiroh et al. 2009 type strain cip 110056, dsm 19415, dsm 19475, k4, kctc 22050