Actually it doesn't take very long for a hermit crab to smell when it's dead. They will not smell if they just died. About 10-15 mins they will start to smell. You have to put the hermit crab up to your nose in order to smell the rotten fish smell.
i have hermit crabs and normally they will smell or they will just not move for a long time
Hermit crabs can. It happens when the hermit crab is changing its shell and falls over or when the hermit crab is dead it slides out or falls out of its shell! Sadly they can't always get back in there shells and die.
A Hermit crab can live up to 100 years of age
As long as you're sure your crab is dead and not molting, yes, dig it up immediately. You can boil the shell it lived in and put it back in your tank for other crabs to use.
1 year
it never sheds
Hermit crabs can get up to 1 or 2cm . - Taylor Musgrave ; Myspace mee (:
Up to 20 years
Hermit crabs should stay in a tub of lukewarm water for around 2-3 minutes. You shouldn't bathe them any longer than 3 or 4 minutes. Depending on the type of hermit crab, there is a possibility that the hermit crab could drown, so watching the hermit crab moving is a good thing. Bathe your hermit crab once a week. If your hermit crab is not used to taking baths, start giving him/her baths once a month and when your crabs are used this give him/her baths once a week. Clean your crab for at least 15 minutes or wait until your crab climbs out of his bathtub.
Well, it probably won't harm them if the food does not have preservatives or spices because they can eat just about anything. My little sister's hermit crab survived a month in the wild when we accidentally thought it was dead and buried it. A month later we found it alive in our front yard so a hermit crab can survive a long time on just about any food. I would recommend getting it crab food soon though because that is what they prefer.
However long they feel like it
no as long as you take care of it and you are not overcrowding the tank