Caecilians of the World
- Describes the biology, natural history and husbandry of caecilians.
- http://www.herper.com/amphibians/caecilians.html

Caecilians of Las Cruces Biological Station, Costa Rica
- Explains what Caecilians are, and displays photographs.
- http://www.dnr.cornell.edu/edge/Field_guide_caecilians.htm