A large, fast‑swimming ocean fish that is widely caught for food and often canned.
From Spanish *atún*, from Arabic *tūn*, from Greek *thynnos* “tunny, tuna,” related to *thyein* “to rush, dart,” describing the fish’s speed. The English form shortened over time to *tuna*.
Tuna can swim as fast as a highway car and travel thousands of kilometers across oceans, yet many people only know it as something in a can. Their speed and long migrations make them both impressive and very hard to protect from overfishing.
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