b'Imagine for a second that you\\u2019re a crab, and a fellow crustacean called a mantis shrimp has decided to make you its lunch. The truth is, it\\u2019s not worth struggling. The mantis shrimp uses muscles to cock back two hammer-like appendages under its face, storing energy in a saddle-like divot in the limbs.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'