You can see he doesn’t have space,” she explained in Spanish while holding up the crab still inside the pipe ... for an appropriate-sized mollusk shell, which hermit crabs usually inhabit ...

Hermit crabs have a curled tail with a hook that enables their bodies to fit inside these borrowed shells. Sometimes when a new shell turns up, hermit crabs will form a line, biggest to smallest ...

What's inside a clam? A retractable foot ... Benji: I got one, but it looks like it's dead. Soren Dahl: Old shell. Benji: Oh, I got a crab. Narrator: Then we stumbled upon what's known as a ...