Carapace

The shell of a turtle or tortoise, or the plate that covers the head of a crustacean
Real World Example
Imagine carrying a heavy backpack through a crowded city street, constantly needing to protect your belongings from bumps and jostles. This is similar to how a carapace functions for a turtle or tortoise, as well as certain crustaceans, by providing a protective shield against external forces. Just as the backpack safeguards your possessions from potential damage, the carapace acts as a natural armor, shielding these creatures from predators and environmental hazards, ensuring their safety and survival in much the same way.
Practice Version
