Yes. Some more often than others.
I doubt it.
Simply, a "shell change".
There shell
Their shell
a shell...
A hermit crabs abdoman is long and soft. They insert it into the shell, and wrap it around the inside. They can change out of it any time they want.
some crabs, like hermit crabs
What I know of that is hermit crabs will eat snails. However, hermit crabs will often use an empty shell of a sea snail.
They aren't; they need a shell.
break the shell just kiddin
To change into a new shell or to mate. If not for these reasons, it is very sick
No