the kind that don't want them anymore
All crabs lose their shells.
yes they die anywhere including their shell
Soft shell crabs are soft and are eaten with the entire crab. Soft shell crabs are actually hard shell crabs that have shed their shells to allow for growth. Shells do not grow with the crab. Crabs retain a soft shell when they shed their hard shells; then that soft shells begins to harden-up as the crab grows.
Soft shell crabs are in season May through July.
Crabs have no inner skeleton like humans do so the shell is its skeleton but on the outside of its body. The shell protects the crab from injury.
some crabs, like hermit crabs
The scalps of Cowboy Ocean shell crabs who try to invade their territory.
They aren't; they need a shell.
break the shell just kiddin
Crabs have gills. They breathe by letting water run over their gills and getting the oxygen out of it. Crabs that spend some time on land carry a little water inside their shell so they can still breathe. This is why you see them running in and out of the water at the seashore.
to protect them from any other crabs or people stepping on them
By its' legs.
a shell