white shark


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white shark,

large, ferocious shark, Carcharodon carcharias. Also known as the great white shark and maneater, this shark can attack swimmers and boats without provocation, though it does not typically do so. Although not abundant anywhere, it is widely distributed in tropical and temperate oceans and is found in both inshore and deep waters; it is most common on the Atlantic coast of the United States. Like the other members of its family, the makomako
, heavy-bodied, fast-swimming shark, genus Isurus, highly prized as a game fish. Also known as the sharp-nosed mackerel shark, it is a member of the mackerel shark family, which also includes the white shark and the porbeagle.
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 and the porbeagle, it is a fast swimmer, with large pectoral fins and a nearly symmetrical tail fin. Despite its name, the white shark is usually whitish only on the underside, the back being some shade of gray. It has dark-tipped fins and a conspicuous black spot behind the pectorals. It reaches a length of over 20 ft (6 m) and a weight of over 7,000 lb (3,180 kg); one study has suggested that some individuals may live for 70 years or longer. The white shark feeds on large fish and other animals; a 100-lb (45-kg) sea lion was recovered from the stomach of one specimen. The shark's serrated, triangular teeth were used as arrowheads by Native Americans of the Florida coast. The white shark is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Chondrichthyes, order Selachii, family Isuridae.
References in periodicals archive ?
Once he was able to, Riley quickly posted the videos on the (https://www.facebook.com/atlanticwhiteshark/) Atlantic White Shark Conservancy's Facebook page before they began to spread further online.
Townend had to show plenty of patience in the two-mile-one-furlong heat, with just a couple of runners behind Great White Shark turning into the straight.
It's a discovery by researchers from Woods Hole Oceanographic Institution and the University of Washington, who tracked the movements of several tagged great white sharks. They found that white sharks in the open ocean seem to seek out eddies for a surprising reason: The eddies offer a beeline to a banquet of food.
The female white shark measured 2.5 m total length and was classified as juvenile according to Compagno (2001).
For instance, research has shown that male white sharks reach sexual maturity between ages 8 and 10, whereas females don't reach sexual maturity until they are older, ages 12 to 18.
'Getting the opportunity to see a great white shark in action is truly a once-in-a-lifetime experience for our passengers and crew alike,' Jarzobski shared.
A recent population estimate puts the number of adult great white sharks in New Zealand at between 590 and 750 and the total population including juveniles at 5460 sharks.
It should be noted that Michael Phelps did not compete against a real white shark, but only against an animated version of the fearsome animal.
Examinations conducted on the carcasses have shown how killer whales, also known as orcas, dominate the marine food chain at the expense of great white sharks, whose ferocious reputation - thanks partly to the 1975 movie Jaws - belies their vulnerability to shark nets, fishing, poaching and pollution.
M2 EQUITYBITES-November 10, 2016-Aurora's Centaur offers aerial support to local white sharks off Nantucket
IT might look like a scene from 1970s hit movie Jaws but this breathtaking picture of a great white shark was taken by an American teacher who spent the summer cage-diving in South Africa.