colwellia maris colwellia maris colwellia maris is a psychrophilic and gram-negative bacterium from the genus of colwellia with a single polar flagellum which has been isolated from seawater from the sea of okhotsk in japan. colwellia maris scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: colwelliaceae genus: colwellia species: c. maris binomial name colwellia marisyumoto et al. 1998 type strain cip 106458, jcm 10085, abe-1