ulvibacter marinus ulvibacter marinus ulvibacter marinus is a gram-negative, aerobic, chemoheterotrophic and non-motile bacterium from the genus of ulvibacter which has been isolated from seawater from the coast of the yellow sea. ulvibacter marinus scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: ulvibacter species: u. marinus binomial name ulvibacter marinusbaek et al. 2014 type strain imcc12008