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Topic: Great Hammerhead

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Hammerhead shark

Scalloped Hammerhead

Hammerhead shark

	Hammerhead Shark - MSN Encarta
		Hammerhead Shark, common name for about ten related species of sharks found throughout tropical and temperate seas.
		The great hammerhead, a large-toothed, powerful swimmer more than 4 m (more than 13 ft) long, has attacked divers.
		The scalloped hammerhead is classified as Sphyrna lewini, the smooth hammerhead as Sphyrna zygaena, and the bonnethead as Sphyrna tiburo.
	encarta.msn.com /encyclopedia_761556855/Hammerhead_Shark.html (180 words)

	Hammerhead Sharks
		Hammerheads are found in almost all of the tropical and warmer temperate waters of the world.
		The great hammerhead, reaching 20 feet, is one of the largest flesh-eating fish in the world, but is rarely seen in Hawaiian waters.
		Hammerheads are especially vulnerable due to their schooling behavior and the predictability of the schools' locations.
	www.moolelo.com /shark-hammerhead.html (908 words)

	Hammerhead Sharks by Sam (Site not responding. Last check: 2007-10-20)
		Great hammerheads swim together in schools with other hammerheads such as Bonnetheads.
		The Great hammerhead's eyes are three feet apart from each other which gives it a wide range of vision.
		The Great hammerhead is dark olive green to brownish grey on the top and white on its belly.
	www.crockerfarm.org /ac/rm02/animals/samshark.htm (340 words)

	BBC - Nature - Predators (Site not responding. Last check: 2007-10-20)
		Great hammerheads are a dark olive colour with a pale underside.
		Great hammerheads are solitary, unlike scalloped hammerheads, and feed on other small sharks, rays (including sting rays), squid and bony fish.
		Great hammerheads are not considered to be endangered although they are hunted for sport and for their skin, which is used as leather.
	www.science.fau.edu /sharklab/media/bbc/pred_wildfile_hammerhead.html (172 words)

	Shark Diving International: Great Hammerhead Shark Diving (Site not responding. Last check: 2007-10-20)
		Size: Great hammerheads are born between 50 and 70 cm (19.7 to 27.6 inches) and can grow to a gargantuan 6 m (19.8 feet).
		Great hammerhead sharks posses a virtually straight anterior margin of the head with a deep central indentation.
		The great hammerhead is observed in deep water off the fore reef, in channels, on the reef flat and in lagoons.
	www.greatwhiteadventures.com /hammerhead-data.html (421 words)

	AllRefer.com - hammerhead shark (Vertebrate Zoology) - Encyclopedia
		The largest species is the widely distributed great hammerhead, Sphyrina mokarran, which typically reaches 15 ft (4.6 m) in length; the distance between its eyes may be as much as 3 ft (90 cm).
		The bonnet, or shovelhead, shark is a small, harmless hammerhead found in the W Atlantic from Brazil to Massachusetts.
		Hammerhead sharks are classified in the phylum Chordata, subphylum Vertebrata, class Chondrichthyes, order Selachii, family Sphyrnidae.
	reference.allrefer.com /encyclopedia/H/hammerhe-sh.html (338 words)

	ESPNOutdoors - Profile: Great Hammerhead
		Great hammerheads have been known to enter water as shallow as 1 meter.
		Hammerheads are caught far from land by commercial longliners and by sport fishermen, and also in shallow coastal waters including sounds and bays.
		Hammerheads are marketed fresh and salted, usually in the Caribbean and along the Central American coast.
	sports.espn.go.com /outdoors/fishing/news/story?page=f_enc_Hammerhead (337 words)

	BBC - Science & Nature - Articles - Hammerhead: the other great white shark
		There are reports of great hammerheads growing to 21 feet, and 18-foot individuals have been seen in the past two years.
		If the hulking great white is the B52 of the shark world, the great hammerhead must be the stealth bomber, with its sinister angles and sci-fi look.
		Partly because no one really knows what to expect from a great hammerhead and partly because of its size, it is frequently classed as an exceptionally dangerous species, alongside those other 'villains', the bull, great white and tiger sharks.
	www.bbc.co.uk /nature/animals/features/311feature1.shtml (530 words)

	Common hammerhead
		It appears that hammerheads are commonly about 19 to 20 inches long when they are born; seemingly, they mature sexually at about 7 to 8 feet; they are often taken 9 to 11 feet long, and occasionally as long as 12 to 13 feet.
		They resemble the common hammerhead closely in general appearance, but both of them may be distinguished from the latter by the fact that the front outline of their head is scalloped in the midline, not evenly rounded there as it is in the common hammerhead.
		Hammerheads (often in small schools) wander northward every summer, along the Atlantic seaboard; they are often to be seen basking at the surface (some harpooned) a few miles out, off Marthas Vineyard and Nantucket; and one is occasionally taken in one or another of the fish traps near Woods Hole.
	www.gma.org /fogm/Sphyrna_zygaena.htm (817 words)

	Florida Museum of Natural History Ichthyology Department: Scalloped Hammerhead (Site not responding. Last check: 2007-10-20)
		The scalloped hammerhead is circumglobal, residing in coastal warm temperate and tropical seas.
		The scalloped hammerhead is distinguished from other hammerheads by an indentation located centrally on the front margin of the broadly arched head.
		Another distinguishing characteristic of the great hammerhead is the curved rear margins on the pelvic fins while the scalloped hammerhead has straight posterior edges.
	www.flmnh.ufl.edu /fish/Gallery/Descript/Schammer/ScallopedHammerhead.html (1680 words)

	6000tiger's hammerheads
		Hammerheads five gills allow the shark to breathe by extracting oxygen from the water and then pushing it over the gill slits.
		Hammerheads swing their head from side to side like a metal detector to sample the water with their noses.
		Hammerhead sharks are distributed in tropical and warm temperate oceans, both coastal and insular.
	www.geocities.com /RainForest/Andes/1151 (1334 words)

	Florida Museum of Natural History Ichthyology Department (Site not responding. Last check: 2007-10-20)
		The dorsal side of the great hammerhead is dark brown to light grey or even olive in color fading to white on the underside.
		Great hammerheads are active predators, preying upon a wide variety of marine organisms, from invertebrates to bony fishes and sharks.
		Parasitic copepods of the underside of snout of a great hammerhead
	www.flmnh.ufl.edu /fish/Gallery/Descript/GreatHammerhead/GHammerhead.html (1503 words)

	Great hammerhead - Sphyrna mokarran: More Information - ARKive
		The great hammerhead is found around the world in warm temperate and tropical seas including the Atlantic, Pacific and Indian Oceans and the Mediterranean and Black Seas (1) (2).
		Preferring warm temperate and tropical waters, the great hammerhead is usually found close inshore, particularly around reefs, but may also found some distance offshore to depths of 300 metres (2).
		The great hammerhead is particularly keen on feeding on stingrays, despite the danger of their barbs.
	www.arkive.org /species/GES/fish/Sphyrna_mokarran/more_info.html (717 words)

	FACTOIDS Each week, a shark eats about 1 to 10 percent of its total body weight
		Great numbers of sharks are accidentally killed en masse by fishermen's nets.
		Most researchers agree that while great whites are deadly predators, attacks on humans are usually a blunder on the shark's part.
		This encounter is between a hammerhead and a 100 pound tarpon.
	web.fccj.org /~dbyres/2011projects/Hammerhead/hammerhead.htm (2090 words)

	SharkFriends Virtual Dive (Site not responding. Last check: 2007-10-20)
		The hammerhead is one of the strongest swimmers of all sharks.
		The largest of Hammerheads is the Great Hammerhead which can grow to 11 feet in length, although some have been reported as large as 20 feet.
		Hammerheads are found in all warm and tropical seas.
	www.sharkfriends.com /index2.html (117 words)

	Great hammerhead shark headlining in Vegas aquarium - The Honolulu Advertiser - Hawaii's Newspaper
		Because great hammerheads are not found in aquariums, there is little information about their life expectancy, said Jack Jewell, Mandalay's Shark Reef curator.
		Great hammerheads, the largest of the nine hammerhead species, can grow to 18 feet and weigh more than 500 pounds.
		The hammerhead was flown from Marathon, Fla., to Las Vegas in a specially-built tank which allowed free movement as hammerhead sharks must swim constantly).
	the.honoluluadvertiser.com /article/2003/Dec/14/il/il08a.html (564 words)

	Sphyrna mokarran, Great Hammerhead Shark at MarineBio.org
		The Great hammerhead, however, is the largest of the 9 species of Hammerhead sharks and is reported to reach up to 6.1 m in length and weigh up to 449.5 kg.
		The Great hammerhead shark prefers to feed on stingrays and other batoids, groupers, and sea catfishes, but also preys on other small bony fishes, crabs, squid, other sharks, rays, and lobsters.
		Great hammerhead meat is utilized for human consumption (fresh, fresh-frozen, dried-salted, and smoked), liver oil for vitamins, fins for soup, hides for leather and carcasses for fishmeal.
	marinebio.org /species.asp?id=87 (759 words)

	Animal Planet :: Corwin's Carnival of Creatures (Site not responding. Last check: 2007-10-20)
		Great hammerhead sharks feed on rays, smaller sharks, and many species of bony fishes.
		Great hammerhead sharks are classified as game fish, as are all large hammerhead sharks.
		Great hammerhead shark populations seem to be stable.
	animal.discovery.com /fansites/jeffcorwin/carnival/waterbeast/hammerhead.html (282 words)

	Dive Cayman - a scuba diving, snorkelling Caribbean vacation paradise
		Hammerheads are probably the most easily distinguished of the sharks due to the unusual shape of their heads.
		As its name implies, the great hammerhead grows quite large; reaching 20 feet (6 m).The great hammerhead is found worldwide in tropical waters.
		The great hammerhead feeds on fishes, particularly stingrays and eagle rays, as well as on crustaceans.
	www.divecayman.ky /sites/fishDetail.asp?speciesid=112 (296 words)

	SharkTrust Online - Great Hammerhead (Site not responding. Last check: 2007-10-20)
		The scalloped hammerhead is quite commonly seen swimming with one pectoral fin pointing down towards the bottom and one towards the surface.
		This is purely speculation but if scalloped hammerheads show dominance by flashing their white belly, perhaps the display you saw was not intended for you at all, but the reef sharks you mentioned.
		The great hammerhead may have been saying to the reef sharks - 'If this object is food, then I have dominant feeding rights'.
	www.sharktrust.org /cgi/forum/topic.asp?TOPIC_ID=233 (699 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		A large or very large (to over 500 cm) distinctive hammerhead shark with an angular head measuring 23 to 27% of TL; its anterior margin conspicuously straight and with a shallow median indentation.
		A large, voracious species - and one of the largest predatory sharks - occuring both as a coastal and semi-oceanic pelagic inhabitant of continetal and insular shelves; ranging from the surfline to well offshore at depths from the surface down to 80m or greater.
		Great hammerheads are highly nomadic, with poleward summertime migrations in parts of their global range.
	ds.dial.pipex.com /sharktrust/greathamm.shtml (463 words)

	Shark Magazine and Shark News. Shark Research and Shark Diving (Site not responding. Last check: 2007-10-20)
		A part of me says that this is silly: the great hammerhead shark Sphyrna mokarran is the non plus ultra of hammerheads, or, as Jim Abernethy the Shearwater skipper calls it in his exclamation mark infested way, 'the King Kong of hammerheads (!!!)'.
		It was the smaller not-so-great great hammerheads up to about three metres in length, that had the courage, immaturity or sheer crazed hunger to bank, swoop and dart amongst the hovering divers to feed on the dangled fish carcasses.
		Great white sharks and information on sharks and how to adopt a shark - including shark facts and types of sharks.
	www.sharktrust.org /cgi/magaz.asp?artnum=16 (1136 words)

	Ras Mohamed Sharks Species (Site not responding. Last check: 2007-10-20)
		Great whites give birth to live sharks which reach sexual maturity at about 10 years of age.
		For this reason, the great white is now a protected species in many parts of the world.
		This is a great migratory species which follows the plankton but is limited to water temperatures between 20 to 25 degrees Celsius as this provides the optimum conditions for plankton growth.
	www.rasmohamed.com /rasita6a.html (2059 words)

	HAMMERHEAD SHARK - Enchanted Learning Software
		The great hammerhead swims in warm and relatively warm water along the coastlines.
		The great hammerhead migrates seasonally to cooler waters during the summer.
		The great hammerheads are viviparous, giving birth to live young.
	www.enchantedlearning.com /subjects/sharks/species/Hammerhead.shtml (405 words)

	Vegas casino exhibits great hammerhead shark (printable version)
		After more than two years in seclusion and doubts about whether it would survive in captivity, a great hammerhead shark was released this week into a massive aquarium at the Mandalay Bay hotel-casino.
		The great hammerhead is one of the ocean's fiercest predators.
		Great hammerheads are also one of the few ocean dwellers that exhibit cannibalistic behavior.
	www.rgj.com /news/printstory.php?id=58539 (303 words)

	Fantastic Fishes 1 - hammerhead sharks (Site not responding. Last check: 2007-10-20)
		One of the favourite foods of the two largest species of hammerheads are stingrays, and the venomous tail spine of stingrays is obviously no deterrent to these formidable predators.
		Thanks to the fortunate observations of a hammerhead attacking a stingray by three shark researchers, we have a remarkable description of the use of the shark’s head in prey handling.
		The function of the hammerhead sharks’ widely-expanded head in prey capture and handling is obvious from the description of this predation event.
	fishwatch.tripod.com /newsletter/1/news1-5.htm (1090 words)

	JASA: Bahamas Itineraries
		The great hammerhead should not to be confused with the smaller and more common scalloped hammerhead, which can be seen schooling in many locations around the world.
		Encountering the great hammerhead with its spectacular angularity, its Orca-like dorsal fin, and its bristle-toothed mouth is at the very pinnacle of wildlife adventure.
		Although the tiger shark tends to be more cautious than the great hammerhead, we regularly encounter tiger sharks from 6-18 feet in length.
	www.scuba-adventures.com /bahamas_itineraries.shtml (4062 words)

	[No title]
		The shark grows to a length of at least 18.3 feet (5.6m), and may attain a length of more than 20 feet (16.1m), however, most individuals encountered by divers are between 10 and 14 feet in length (3 to 4.3 m).
		Mating - Mating great hammerheads were reportedly witnessed in 70 ft (21m) in the Bahamas The sharks ascended, spiralling slowly around each other and copulated at the surface.
		Danger to humans - Due to its large size the great hammerhead shark is considered potentially dangerous.
	www.sharkresearch.com /species/hh-great.html (450 words)

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