Order Carcharhiniformes(ground sharks), Family Sphyrnidae(hammerhead) Scalloped hammerhead Korean. n. Hong-sal-gyeui-sang-eo (홍살귀상어) Sphyrna lewini (Griffith & Smith, 1834). 430cm(TL)
Distribution: All around Korean Peninsula, Circumglobal in coastal warm temperate and tropical seas. General: A large hammerhead, 1st dorsal fin moderately high, uniform grey, grayish brown, or olivaceous above, shading to white below. Pectoral fins tipped with grey or black ventrally. Head flattened and extended to either side, with eyes set on the outer edges. Front edge of head slightly rounded and scalloped. A coastal-pelagic, semi-oceanic shark occuring over continental and insular shelves and adjacent deep water, often approaching close shore and entering estuaries. Depth range 0~500m depth. The hammerhead sharks commonly observed in Galapagos is all `Scalloped Hammerheads.` Huge schools of small migrating individuals found in certain areas, permanent resident populations also exist. Adult solitary, in pairs, or schools, young in large schools. Viviparous, produces 15~31, of 43~55cm young in a litter. Feeds on bony fish, cephalopods, lobsters, shrimps, and crabs, including othe sharks and rays. Considered potentially dangerous to people but not aggressive when approached by divers. Utilized for human consumption.
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