An example of chemosynthetic bacteria is thermodesulfovibrio yellowstonii. These bacteria are found in Yellowstone Lake thermal vents and are thermophilic chemosynthetic bacteria.
Other species that love in Yellowstone Lake are gammaproteobacteria. These live at the temperatures of 86 to 93 degrees Fahrenheit. They use a biochemical process of oxidizing sulfide, sulphur and thiosulfate to make carbohydrates. This is what makes chemosynthetic bacteria different from plants, which absorb sunlight to produce food for themselves. Chemosynthesis, as opposed to photosynthesis, does not require sunlight and can take place under extreme conditions in the hot vents under water.
Habitats for chemosynthetic bacteria are usually found in the ocean depths, where a mineral soup is leaking out of the seafloor via thermal vents. Sergei Winogradsky discovered a chemosynthetic bacteria called beggiatoa in 1880 before the actual thermal vents were found.
Chemosynthesis is the oldest way for organisms to produce food. In the oceans or hot lakes, chemosynthetic bacteria constitute the basis of an ecosystem, where bacteria live in the mud of the ocean floor or inside larger animals, such as snails or limpets. Larger predators then eat these. Long tubeworms rise up from the hot hydrothermal vents, which become centers where life concentrates in an otherwise lifeless environment.