Hermit crabs are nocturnal creatures, so they naturally sleep during the day and come out at night.

How do you know if a hermit crab is sleeping?

It's hard to know if your hermit crabs are sleeping to excess. They may have been awake for hours. They may just be hiding or relaxing within their shells. Observe other behaviors of your hermit crabs to judge whether you should be concerned.

Should I wake up my hermit crab?

Mist the hermit crab with a spray bottle of dechlorinated water. You are already doing this several times a day to help keep him moist and provide humidity in the tank. Two or three small squirts, at most, should wake him up.