One of his videos shows a crab moving from a piece of plastic to a natural shell. Miller says hermit crabs don’t choose to live permanently in plastic; they simply use it temporarily until they ...

The problem is worsened by the fact that hermit crabs don't have a shell of their own. As they grow, they need to move into larger shells. When one crab dies, it emits a smell that tells another ...

Hermit crabs are famous for being small ... with attachments referred to as “mechanical shells.” They variously allow the robot to move differently or interact in a new way with the world.

Instead, hermit crabs have a hard exoskeleton on the front part of their bodies but a soft tail on the other half, which they protect using the discarded shells of other animals, like whelks.