Yes, they do. if they're in a tank put some shells in it for it to swap them over. Otherwise no they don't.
Simply, a "shell change".
Hermit crabs live in sea snail shells so the hermit crabs go in which ever shell they think will be comfy, like turbo shells. Also hermit crabs love shells with a pearl color inside.
Hermit crabs protect themselves by the shells they live in. By living in shells they are able to hide in them, away from predators.
No hermit crabs inspect a new shell inside of their cage the they pull them self out of the shell and then drop them self into a new shell. there are videos on youtube.com of crabs changing shells. so provide your crab with extra shells. i am a hermit crab owner i have watched my crabs change shells it is called molting.
Answer: Usually a sea snail's.
Empty snail shells.
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
To change into a new shell or to mate. If not for these reasons, it is very sick
They live in the abandoned shells of other creatures, and change them as they grow. The asymmetric size of the hermit crabs claws is remarkable.
Sometimes it is because they outgrow the old one. They spend most of their lives looking for the perfect shell!
They got there name because they were hermits since they lived and hid in shells thats why they are hermit crabs.
Hermit crabs do not care much for the color of the shell, however, they prefer shells with a pearl lining inside. Ecuadorian hermit crabs are very picky for their shells though! Try to get the same shape and colour of shell for these ones.