The Crab Nebula in which the Crab Pulsar resides, as imaged by JWST. (NASA, ESA, CSA, STScI, T. Temim/Princeton University) ...

Unlike other decapods such as shrimp, lobster, or crayfish, crabs’ tails are curled under the thorax (or midsection). The carapace (upper body shield) is usually broad, and as is common for the ...