hammerhead shark


hammerhead shark
Any of the swift, powerful sharks in the family Sphyrnidae, having a broad, flattened, hammer-or spade-shaped head, with the eyes and nostrils at the ends of the sidewise projections.

Widely distributed in all oceans, in warm and temperate waters, they feed on fish, stingrays, skates, and other sharks. Some species are fished for leather and oil. Three species seem to be particularly dangerous to humans: the great hammerhead (the largest hammerhead, growing to 15 ft, or 4.5 m, or more), the scalloped hammerhead, and the smooth hammerhead. All three are grayish and found throughout the tropics.

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fish
      any shark of the family Sphyrnidae (class Selachii). Hammerheads are widely distributed in all oceans, in warm and temperate waters. These sharks are named for the unusual shape of their heads, which are broad, flattened, and hammer- or spade-shaped, with the eyes and nostrils at the ends of the sidewise projections. It is thought that the peculiarly shaped head may serve as a rudder, aiding maneuverability, and that the nostrils, being widely spaced, enable better tracking of scents.

      Hammerheads are swift, powerful sharks that may be found at sea, close to shore, or in brackish water. They feed on fish, stingrays, skates, and other sharks. Some species are fished for leather and oil.

      Hammerheads have long been feared as potential man-eaters. Three species seem to be particularly dangerous: the great hammerhead (Sphyrna mokarran), growing to a maximum length of 4.5 m (15 feet) or more; the scalloped hammerhead (S. lewini), growing to about 3 m; and the smooth hammerhead (S. zygaena), growing to about 4.25 m. All three are grayish and are found throughout the tropics; the smooth hammerhead, which is valued as a sport fish, also ranges into cooler waters. These three species are individually distinguished by the shape of the front edge of the head: straight, with a central notch in the great hammerhead; curved outward with a central notch in the scalloped hammerhead; and curved outward but unnotched in the smooth hammerhead.

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Universalium. 2010.

Look at other dictionaries:

  • Hammerhead shark — Taxobox name = Hammerhead shark fossil range = Middle Miocene to Present [cite journal last = Sepkoski first = Jack bobbie = coauthors = title = A compendium of fossil marine animal genera (Chondrichthyes entry) journal = Bulletins of American… …   Wikipedia

  • hammerhead shark — paprastasis kūjaryklis statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Sphyrna zygaena angl. balance fish; common hammerhead; hammerhead shark; round headed hammerhead shark; smooth hammerhead rus. молот рыба;… …   Žuvų pavadinimų žodynas

  • hammerhead shark — noun medium sized live bearing shark with eyes at either end of a flattened hammer shaped head; worldwide in warm waters; can be dangerous • Syn: ↑hammerhead • Hypernyms: ↑shark • Hyponyms: ↑smooth hammerhead, ↑Sphyrna zygaena, ↑ …   Useful english dictionary

  • hammerhead shark — noun a) Any of various sharks of the genus Sphyrna having the eyes set on projections from the sides of the head, which gives it a hammer shape. b) A winghead shark …   Wiktionary

  • hammerhead shark —   Manō kihikihi …   English-Hawaiian dictionary

  • round-headed hammerhead shark — paprastasis kūjaryklis statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Sphyrna zygaena angl. balance fish; common hammerhead; hammerhead shark; round headed hammerhead shark; smooth hammerhead rus. молот рыба;… …   Žuvų pavadinimų žodynas

  • bronze hammerhead shark — bronzinis kūjaryklis statusas T sritis zoologija | vardynas taksono rangas rūšis atitikmenys: lot. Sphyrna lewini angl. bronze hammerhead shark; scalloped hammerhead rus. бронзовая молот рыба; южная молот рыба ryšiai: platesnis terminas –… …   Žuvų pavadinimų žodynas

  • Hammerhead — may refer to:* The head of a hammer.In zoology: * Hammerhead sharks (genus Sphyrna ), of which there are nine known species. * Hammerkop ( Scopus umbretta ), a bird of order Ciconiiformes, may also be known as a hammerheadIn music: * Black… …   Wikipedia

  • HammerHead — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Hammerhead peut se traduire par « tête de marteau » et désigne le requin marteau en anglais. Le terme peut aussi se référer à : Sommaire 1… …   Wikipédia en Français

  • Hammerhead (Dino-riders) — Hammerhead is a Rulon character from the TV cartoon Dino riders. He looks like a hammerhead shark and leads a race called the shark people. He is the most competent of all Rulon commanders. Normally he follows his emperor Krulos, but he helps him …   Wikipedia


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