Hermit crab will die without a shell, because its belly is soft and easy to be preyed. The shell can protect and moisturize the body. When it loses its shell, it will not die for a short time, but it will die after a while.

Hermit crabs will replace their bodies with a big shell when they grow up, and they will put their bodies in a new shell in a short time. Hermit crabs are different from other animals. They need to keep looking for new shells to survive.