shewanella frigidimarina shewanella frigidimarina shewanella frigidimarina is a species of bacteria, notable for being an antarctic species with the ability to produce eicosapentaenoic acid. it grows anaerobically by dissimilatory fe (iii) reduction. its cells are motile and rod shaped. acam 591 is its type strain. shewanella frigidimarina scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: shewanellaceae genus: shewanella species: shewanella frigidimarinabowman et al., 1997