There’s only one freshwater hermit crab, Clibanarius fonticola ... Sometimes when a new shell turns up, hermit crabs will form a line, biggest to smallest, to see which animal fits the new ...
They’re also one of the world’s largest arthropods, animals with no backbone, external skeletons, and multiple-jointed appendages. In this crab’s case, those appendages are its 10 legs.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback