Caecilians are members of the order Gymnophiona, a group of limbless, burrowing amphibians that are often mistaken for worms or snakes. They possess elongated, segmented bodies, specialized sensory tentacles, and unique skin adaptations for a subterranean lifestyle. Caecilians play important roles in soil ecosystems as predators of invertebrates, and they exhibit fascinating reproductive methods, including internal fertilization and parental care.