shimia thalassica shimia thalassica shimia thalassica is a gram-negative, mesophilic, slightly halophilic aerobic and non-motile bacterium from the genus of shimia which has been isolated from coastal seawater from valencia in spain. shimia thalassica scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: shimia species: s. thalassica binomial name shimia thalassicaarahal et al. 2019 type strain cect 7735