Skipjack tuna important prey species for sharks and large pelagic fishes and is often used as live bait when fishing for Marlin. It has no scales, except on the lateral line and the corselet (a band of large, thick scales forming a circle around the body behind the head). It commonly reaches fork lengths up to and a weight of . Its maximum fork length is and maximum weight is . Ageing skipjack tuna is difficult, and the estimates of its potential lifespan range between 8 and 12 years. Skipjack tuna is a batch spawner. Spawning occurs year-round in equatorial waters, but
HMS Skipjack (1889) a minefield laid by the German submarine "UC-68" in the approaches to the Clyde which was holding up shipping from the Clyde and Liverpool. "Skipjack" was a member of the Second Fleet Sweeping Flotilla, based at Scapa Flow as part of the Grand Fleet, in July 1917. In 1918 she was a member of the 13th Fast Minesweeper Flotilla at Oban . "Skipjack" was sold for scrap to Hammond Land Foundry of Dublin on 23 February 1920. HMS Skipjack (1889) HMS "Skipjack" was a of the British Royal Navy. She was built at Chatham Dockyard from 1888–1891. She was converted