shewanella aestuarii shewanella aestuarii shewanella aestuarii is a gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped and motile bacterium with a polar flagellum from the genus of shewanella which has been isolated from tidal flat from the suncheon bay on korea. shewanella aestuarii scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: shewanellaceae genus: shewanella species: s. aestuarii binomial name shewanella aestuariipark et al. 2013 type strain b11, dsm 19476, kctc 22051, lmg 26132, roh b11