if your a new hermit crab owner or you just like hermit crabs this is the site for you

how to tell the age and gender of your hermit crab

age
If your hermit crab is about the size of a golf ball its 8 to ten years old and if its about the size of a base ball its about 14 to 17 years old. And if treated properly hermit crabs can live to about 30 or more years.
  gender
the females have to holes called genopores on their 3 set of legs including the claws