ulvibacter litoralis ulvibacter litoralis ulvibacter litoralis is a gram-negative, aerobic, heterotrophic and non-motile bacterium from the genus of ulvibacter which has been isolated from the alga ulva fenestrata. ulvibacter litoralis scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: ulvibacter species: u. litoralis binomial name ulvibacter litoralisnedashkovskaya et al. 2004