Photos by] 
[Z. Step. 
SWIMMING CRAB AND SPIDER CRAB. 
The upper photograph shows the Velvet Fiddler Crab, in which the hindmost pair of limbs are flattened out and fringed 
with hairs to adapt them for use as paddles. The lower photo is of Gibbs’ Spider Crab, which has a living sponge growing over 
and concealing the body. 
