The family Caeciliidae, commonly known as caecilians, belongs to the order Gymnophiona. Caecilians are limbless, elongated amphibians that resemble worms or snakes and are primarily adapted for a burrowing lifestyle. They have smooth, often segmented skin and reduced or absent eyes, reflecting their subterranean habits. Most caecilians are found in tropical regions of South and Central America, Africa, and South Asia. They are carnivorous, feeding on soil invertebrates such as earthworms and insects, and some exhibit unique reproductive strategies, including internal fertilization and maternal skin-feeding in certain species. Though elusive and rarely seen, caecilians play an important ecological role in soil aeration and controlling invertebrate populations.