The white-clawed crayfish Austropotamobius pallipes is Britain’s only native crayfish. This small, olive-brown crustacean with pale undersides on its claws – hence its name – once thrived in the…

The white-clawed crayfish is the UK's only native freshwater crayfish, but sadly it is under threat from a non-native competitor. Hampshire and Isle of Wight Wildlife Trust has been working…