shewanella atlantica shewanella atlantica shewanella atlantica is a psychrophilic bacterium from the genus of shewanella which has been isolated from marine sediment from the emerald basin from the atlantic ocean near canada. shewanella atlantica can degrade hexahydro-1,3,5-trinitro-1,3,5-triazine. shewanella atlantica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: shewanellaceae genus: shewanella species: s. atlantica binomial name shewanella atlanticazhao et al. 2007 type strain ccug 54554, ncimb 14239, haw-eb5