Microfauna refers to tiny, often microscopic organisms that inhabit various environments, including soil, water, and decaying organic matter. These organisms include protozoa, nematodes, and small rotifers, which play essential roles in ecosystems by contributing to nutrient cycling and soil health. Despite their small size, microfauna are crucial for maintaining ecological balance. They help decompose organic material, making nutrients available for larger organisms. Additionally, they serve as food for larger creatures, such as small invertebrates and fish, thus supporting the food web in their respective habitats.