Epifauna refers to organisms that live on the surface of the seabed or other substrates in aquatic environments. These creatures can include various types of animals, such as crustaceans, mollusks, and echinoderms, which interact with their surroundings and often play important roles in the ecosystem. Epifauna can be found in diverse habitats, including coral reefs, rocky shores, and sandy bottoms. They contribute to the health of these ecosystems by participating in nutrient cycling and providing food for other marine animals. Understanding epifauna is essential for marine biology and conservation efforts.