A new type of bacterium "Candidatus Ovobacter propellens" is described. It is a large ovoid species with a number of unusual features including special intracellular membrane systems and a huge flagellar tuft consisting of about 400 flagella. "Ovobacter" lives in oxygen gradients in the surface layer of sulphidic marine sediments at an O 2-tension of about 0.5% atmospheric saturation. It swims continuously and very fast (up to 1 mm s-1). Its mode of swimming and its chemosensory behaviour towards O2 are described in detail. © 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
Fenchel, T., & Thar, R. (2004). “Candidatus Ovobacter propellens”: A large conspicuous prokaryote with an unusual motility behaviour. FEMS Microbiology Ecology, 48(2), 231–238. https://doi.org/10.1016/j.femsec.2004.01.013