Crayfish Home Page at BYU
- Identification, photographs, and frequently asked questions from Brigham Young University.
- http://crayfish.byu.edu/

Crayfish Connection
- Covers the life cycle, body parts, diet, and habitat of crayfish.
- http://www.ci.shrewsbury.ma.us/Sps/Schools/Central/Curriculum/ELEMENTARY/SCIENCE/crayfish.htm

Crayfish Review
- Uses images to help advanced students study and identify different parts of crayfish.
- http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

Spiny Freshwater Crayfish
- Australia is home to the three largest freshwater crayfish in the world. Discover the Spiny crayfish, with information on its size, habitat, and diet.
- http://www.nativefish.asn.au/spiny.html