Framlingham Environmental - Crayfish site moniyoring and trapping - Crayfish Traps, White-Clawed Crayfish, Signal Crayfish, Environment Agency

White-clawed crayfish Thomson Environmental Consultants

White-clawed crayfish and crayfish plague - Off the Scale magazine

Signal Crayfish {Pacifastacus leniusculus}

Reintroducing the Endangered White-Clawed Crayfish

White-clawed Crayfish

White-clawed crayfish in the UK

Essex Crayfish EssexSuffolkRivers

Crayfish in canals and rivers - The Inland Waterways Association

Crayfish - Wikipedia

Rescued endangered species moved to safe haven

White clawed crayfish Austropotamobius pallipes 2 - Lizzie Harper

Cambarus H. chasmodactylus

Bad 'dads: Crawdads of Kodiak. A conversation about crayfish in Alaska, by U.S.Fish&Wildlife Alaska, Updates from the U.S. Fish and Wildlife Service

Framlingham Environmental - Crayfish site moniyoring and trapping - Crayfish Traps, White-Clawed Crayfish, Signal Crayfish, Environment Agency

American Signal Crayfish: A Losing Battle?