thalassobacillus thalassobacillus thalassobacillus is a gram-positive, oxidase positive, catalase negative, rod shaped and moderately halophilic genus of bacteria from the family of bacillaceae. single colonies are small (pin headed) in size.thalassobacillus bacteria produces meso-diaminopimelic acid. s.i. paul et al. (2021) isolated and biochemically characterized thalassobacillus devorans from marine sponges of the saint martin's island of the bay of bengal, bangladesh. thalassobacillus scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: thalassobacillusgarcía et al. 2005 species t. cyri t. devorans t. hwangdonensis t. pellis