salegentibacter echinorum salegentibacter echinorum salegentibacter echinorum is a gram-negative, heterotrophic, strictly aerobic and non-motile bacterium from the genus of salegentibacter which has been isolated from a sea urchin (hemicentrotus pulcherrimus) from the yellow sea in china. salegentibacter echinorum scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: salegentibacter species: s. echinorum binomial name salegentibacter echinorumxia et al. 2014 type strain hd4