A subclass of crustaceans that includes shrimp, lobsters, and crabs, characterized by having a carapace that covers the thorax.
From Greek 'eu' (well) + 'karidē' (shrimp), literally meaning 'true shrimp.' This taxonomic term emerged in the 19th century as zoologists classified marine crustaceans more precisely.
Despite looking completely different, a tiny shrimp and a massive lobster are both eucarids—the shrimp is basically just a miniature, less heavily armored version of its larger cousin!
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