The Halomonas titanicae bacterium was found in "rusticles", the porous and delicate icicle-like structures that form on rusting iron. Samples of rusticles from Titanic were gathered in 1991 by the Mir 2 robotic submersible. Various bacteria and fungi live within the delicate structures - first identified on the Titanic - actually feeding off of the rusting metal. The find is described in the journal International Journal of Systematic and Evolutionary Microbiology. Researchers from Dalhousie University and the Ontario Science Centre in Canada and the University of Seville in Spain isolated the H. titanicae bacteria from those samples. They sequenced the microbes' DNA before discovering that they constituted a new member of the salt-loving Halomonas genus. The bacteria are of particular interest because they may shed light on the mechanism by which rusticles form, and thus on the general "recycling" that such microbes carry out on submerged metal structure
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