Have you ever seen a hermit crab or owned one as a pet? These tiny decapod crustaceans are known for their interesting habit of finding shelter. Rather than growing their own protective shell, such as ...

Sometimes when a new shell turns up, hermit crabs will form a line, biggest to smallest, to see which animal fits the new shell. The next smallest will take that crab’s hand-me-down home ...

In Belize, hermit crabs have outgrown their homes or their ... Then the house swap begins. The largest leaves his old home and moves into the vacant shell next door. Then the next size down ...