Crayfish 

Bibliorgrapy:  

• http://www.myinterestingfacts.com/crayfish-facts/ 

• http://mackers.com/crayfish/info.htm

• http://crayfishblue.weebly.com/index.html 

• https://www.johnston.k12.ia.us/schools/Lawson/Gradelevellinks/Crayfish/craydiet.html