halospina halospina halospina is an extremely halophilic genus of bacteria from the family of hahellaceae with one known species (halospina denitrificans). halospina denitrificans has been isolated from sediments from a hypersaline lake. halospina scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: oceanospirillales family: hahellaceae genus: halospinasorokin et al. 2006 type species halospina denitrificans species h. denitrificans