Chemosynthesis and Hydrothermal Vent Life Chemosynthesis l - Chemosynthesis is the process by which certain bacteria transfer chemicals into energy. l - occurs around hydrothermal vents l Vent Biology: Photosynthesis vs. Chemosynthesis. Sunlight, however, does not reach the hydrothermal vent communities at the bottom of the ocean. chemosynthesis, process in which carbohydrates are manufactured from carbon dioxide and water using chemical nutrients as the energy source, rather than the sunlight. Multimedia Discovery Missions: Lesson 5 - Chemosynthesis and Hydrothermal Vent Life. Multimedia Discovery Missions: Home. NOAA Ocean Explorer: Education. Hydrothermal vents; Cold seeps;. to produce organic material through the process of chemosynthesis. Hydrothermal vent; Marine geology; Chemosynthesis and Hydrothermal Vent Life Introduction. Just a few decades ago, submersibles and remote sensing technologies allowed scientists to visit the farthest. Photosynthesis and chemosynthesis Next. Chemosynthesis occurs around hydrothermal vents and methane seeps in the deep sea where sunlight is absent. In biochemistry, chemosynthesis is the biological conversion of one or more carbon molecules. when hydrothermal ocean vents were predicted to exist in the 1970s. Most life on Earth is dependent upon photosynthesis, the process by which plants make energy from sunlight. However, at hydrothermal vents in the deep.