1. Introduction: Chemosythetically-driven ecosystems in the deep sea Steffen Kiel and Paul A. Tyler 2. Genetics and evolution of deep-sea chemosynthetic bacteria and their invertebrate hosts Robert C. Vrijenhoek 3. Microbial habitats associated with deep-sea hydrothermal vent invertebrates: insights from microanalysis and geochemical modeling Nadine Le Bris and Fran?oise Gaill 4. Microbial chemofossils in specific marine hydrothermal and methane cold...