What is the lifespan of a Hermit crab?

There is a lady on one of the hermit crab forums who has had her crabs in her possession for over 25 years - so they can live a long time if cared for properly. if you need more information on how to take care of hermit crabs - please see landhermitcrabs.com for all the answers to your questions. This is just one of the many reputable hermit crab forums online.