aquimarina gracilis aquimarina gracilis aquimarina gracilis is a gram-negative, strictly aerobic and slender rod-shaped bacterium from the genus of aquimarina which has been isolated from the gut microflora from the mussel mytilus coruscus which was collected from the gwangyang bay from the south sea near korea. aquimarina gracilis scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: aquimarina species: a. gracilis binomial name aquimarina gracilispark et al. 2013 type strain psc32, jcm 17453, kctc 23301