Deep ecosystems refer to complex networks of interactions among various organisms and their environment, typically found in deep-sea habitats. These ecosystems include unique species adapted to extreme conditions, such as high pressure, low temperatures, and complete darkness. They rely on chemosynthesis, where certain bacteria convert chemicals from hydrothermal vents into energy, supporting diverse life forms. In addition to the biological aspects, deep ecosystems play a crucial role in global processes, such as carbon cycling and climate regulation. They are often less explored than shallow waters, making them vital for scientific research and understanding the impacts of human activities on marine biodiversity and ecosystems.