hwanghaeicola hwanghaeicola hwanghaeicola is a gram-negative and strictly aerobic genus of bacteria from the family of rhodobacteraceae with one known species (hwanghaeicola aestuarii).hwanghaeicola aestuarii has been isolated from the tidal flat sediments from the coast of taean in korea. hwanghaeicola scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: hwanghaeicolakim et al. 2010 type species hwanghaeicola aestuarii species h. aestuarii