- Hydrothermal vents: Hydrothermal vents are regions on the ocean floor where hot water from the Earth's crust mixes with cold seawater. The hot water is rich in dissolved minerals, which provide the energy source for chemosynthetic bacteria. These bacteria form the base of a food web that supports a diverse community of organisms, including tube worms, clams, mussels, and crabs.
- Cold seeps: Cold seeps are areas of the ocean floor where hydrocarbons and other fluids seep from the seafloor. The hydrocarbons are broken down by chemosynthetic bacteria, which provide the energy source for a diverse community of organisms. Cold seeps are often found in association with hydrothermal vents.
- Whale falls: Whale falls are the carcasses of dead whales that sink to the ocean floor. The whale carcasses provide a rich food source for chemosynthetic bacteria, which support a diverse community of organisms. Whale falls are often found in deep water.
- Wood falls: Wood falls are the remains of trees that have fallen into the ocean. The wood provides a food source for chemosynthetic bacteria, which support a diverse community of organisms. Wood falls are often found in coastal waters.