True Blue Marron - www.truebluemarron.com.au This is the site to go to if you are in Australia and would like some of your own true blue marron!
Crayfish World
Crusta10.de - Crayfish and other invertebrates
Crayfish Mates - A forum for discussing keeping crayfish of all kinds.
ACWA - Marron Growers Association
RBM Aqua - Books on crayfish of Australia