Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail", usually hidden entirely under the thorax. They live in all the world's oceans, in fresh water, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period.

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'Emerging super Crab' might be the most powerful pulsar ever discovered

'Emerging super Crab' might be the most powerful pulsar ever discovered

‘Fluffy’ crab that wears a sponge as a hat discovered in Western Australia | Australia news

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Tiny 'immortal' crab entombed in amber discovered in a first of its kind

First Dinosaur Era Crab Discovered – Fully Preserved in 100-Million-Year-Old Amber

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Researchers Discover First Dinosaur Era Crab Fully Preserved in 100-Million-Year-Old Amber

First dinosaur era crab fully preserved in amber discovered