colwellia beringensis colwellia beringensis colwellia beringensis is a gram-negative, psychrophilic, rod-shaped and motile bacterium from the genus of colwellia which has been isolated from sediments from the bering sea. colwellia beringensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: colwelliaceae genus: colwellia species: c. beringensis binomial name colwellia beringensiszhang et al. 2017 type strain kctc 52554, mccc 1a11668, strain nb097-1