10 years to 20+ years....
The Life span of a Hermit crab can be anywhere between 1 - 32 but the Average life span is around 10 - 15 Yrs. depending on where U got Ur "Crabby"
Anwhere from several months, to 1 1/2 years.
The average life span of a crab is about 10 yrs
If you treat crabs right they can live up to 20 years old. Most live ten