This POKéMON is vulnerable to attack while its shell is soft, exposing its weak and tender body.
Hardens its shell to protect itself. However, a large impact may cause it to pop out of its shell.
Inside the shell, it is soft and weak as it pre pares to evolve. It stays motion less in the shell.
It prepares for evolution by har dening its shell as much as possi ble to protect its soft body.
This is its pre- evolved form. At this stage, it can only harden, so it remains motionless to avoid attack.
— Pokédex entries (via PokeAPI)