Mantis shrimp size each other up before giving up a fight

To a mantis shrimp, walking away from a fight doesn't mean being a wimp. It means recognizing who they're up against and knowing when to bail rather than drag out a doomed battle, Duke University researchers say.

An adaptation 150 million years in the making

Just how do snapping shrimp snap? This was the question plaguing scientists who set out to uncover the mysterious mechanisms producing big biology in tiny crustaceans.

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