👉 Natural hydrobacteria, also known as anaerobic bacteria, are characterized by their inability to use oxygen for cellular respiration and instead rely on other non-enzymatic pathways to generate energy. These microorganisms are found in environments with low oxygen levels or where the temperature is too high or too cold, such as deep-sea hydrothermal vents, in extreme environments like deserts or saline zones, or in aquatic environments where water is not oxygenated.