Hermit crabs burry themselves to moult, to create a stable humidity and temperature below ground if above ground isn't proper for them, and to hide and by shy if they aren't feeling safe.
Most of the time Hermit Crabs just dig for fun but at other times they are molting.
Pet stores
yes
First of all, hermit crabs are nocturnal so they are more active at night. They dig because that is their nature, they dig so they can go underground and molt, or just to be active. They also like to bury themselves a lot because that is their nature.
the wild populations of land hermit crabs are decreasing because of people collecting them for the pet business :(
not pet hermit crabs... they are too weak and fragile to keep the hermit crab save although wild hermit crabs might use them the would be sea snails which have harder shells
Sand is better so they can dig.
You can buy hermit crabs at stores such as Petco. They have many hermit crabs things to meet your needs.
hermit crabs LOVE to CLIMB trees in the wild so have some tree bark in your tank. Also have hiding places they love to hide, some like to dig. this is chewy89422 inproving answer: land hermit crabs love to do the following: dig,climb,hide,be very social with other crabs,and they love to be playd with and exercise.
Hermit crabs do not have a designated season in the wild; they are typically available year-round. However, the availability of hermit crabs in pet stores may vary depending on breeding cycles and demand. It's best to check with your local pet store for more specific information on when hermit crabs are available.
What I do for my hermit crabs is I take a shallow hermit crab dish (found at pet stores), fill it with fresh NATURAL SPRING WATER (all other water will kill crabs. trust me!), and put in a hermit crab sponge (also found at pet stores). This way they can pleasantly have their NATURAL SPRING WATER (remember that!) without drowning.
usually two or three years