From the Titanic to Fish Farms: The Journey of Halomonas titanicae

The marine halophilic bacterium Halomonas titanicae was isolated from rusticles over the remains of the R.M.S. Titanic in 2010. This species has been extensively studied in the context of deep-sea iron biocorrosion and extreme environment adaptation. However recent research has uncovered the potential of this bacterium as a probiotic in aquaculture. Whole-genome analyses reveal that H. Titanicae possesses a range of osmoadaptation mechanisms oxidative stress response pathways, extracellular enzyme systems and biofilm-forming capabilities. The study also demonstrates that the gut-isolated strain H. Titanicae HT-Tc3 can improve the growth performance, digestive enzyme activity, antioxidant status, nonspecific immunity and resistance to Aeromonassalmonicida infection in turbot. These findings highlight the advantages of using marine probiotics over traditional terrestrial counterparts. Further research is needed to evaluate the safety, regulatory approval and commercial production of this promising aquafeed additive.