Macrofauna refers to large animals that are typically visible to the naked eye and can be found in various ecosystems, including terrestrial and aquatic environments. These organisms play crucial roles in their habitats, contributing to nutrient cycling, soil aeration, and the overall health of ecosystems. Examples of macrofauna include earthworms, insects, and mammals. In marine environments, macrofauna includes larger species such as crabs, fish, and sea turtles. These animals often serve as indicators of environmental health, as their presence and diversity can reflect the condition of their ecosystems. Studying macrofauna helps scientists understand ecological dynamics and the impacts of human activities on wildlife.