Homeless Tortoise
Tortoises are land turtles and they live inside their shell for protection. With their shell being the boney part of their body, they would only be able to live for a short time without it. It is because of this that this picture is heartbreaking.
From a scientific point of view, having this hard outer material is helpful because it allows other curious creatures to explore its structure and texture. However, a shell without a tortoise is nothing but the reminder that a tortoise has been left homeless.