Do female hermit crabs have one claw and male crab two claws?

That's incorrect! Hermit crabs, both male and female, have two claws.

The difference between male and female hermit crabs isn't in the number of claws, but in the size and shape of their abdomen.

* Females have a wider, more rounded abdomen.

* Males have a narrower, more pointed abdomen.

This difference is important because it allows females to carry their eggs safely within their abdomen.