A Stygobite is an organism that lives in groundwater, particularly in subterranean environments like caves and aquifers. These creatures have adapted to life in complete darkness and often have unique physical traits, such as reduced eyesight or specialized sensory organs. Stygobites play a crucial role in the ecosystem by contributing to nutrient cycling and maintaining water quality. Common examples of stygobites include certain species of crustaceans, insects, and fish. They are often studied in the field of biospeleology, which focuses on life in caves and other underground habitats. Understanding stygobites helps scientists assess the health of groundwater ecosystems and the impacts of environmental changes.