The Caecilian is a very unique amphibian most closely related to salamanders. They are found in most tropical regions of the world, although humans rarely see them because they spend most of their time underground. There are over 150 species of Caecilians in existence. Resembling an earthworm in appearance, the Caecilian makes its home in swampy areas in tropical regions. They are burrowing animals and spend most of their time underground, although they will sometimes venture above ground to feed.
Caecilians feed primarily on small invertebrates, including termites and earthworms.
Some species of Caecilians are aquatic and spend all their time in water. Like earthworms, Caecilians sometimes venture out of their burrows in very rainy weather. Caecilians are often mistaken for large earthworms or legless lizards because they have no legs or tails. They are vertebrates and have jaws and teeth like other vertebrates. The Caecilians body has rings of grooves that sometimes have scales, like primitive amphibians.