Legless amphibians. Caecilians (pronounced seh-SILL-yens) are tropical amphibians that look like large worms or slick snakes. They have no arms or legs, and sometimes it's hard to tell which end is the head and which is the tail! Their shiny skin is ringed with skin folds called annuli.

Do Caecilian have lungs?

With the exception of one species (Atretochoana eiselti), all caecilians have lungs, but often the left lung is reduced in size, which is an adaptation for an elongate body shape, much as in snakes. Some species also have dermal calcite scales and are the only living amphibians known to possess them.

Does a caecilian have hair?

This article explains what makes caecilians so fascinating and what we can learn about evolution from studying them. the taxonomic classification system. caecilians and humans are both animals with a backbone but differ — for example, amphibians have moist skin, mammals have hair.