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Hammerhead shark

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980: 137: 1069:) regularly kept by public aquariums. They are particularly vulnerable during transport between facilities, may rub on surfaces in tanks, and may collide with rocks, causing injuries to their heads, so they require very large, specially adapted tanks. As a consequence, relatively few public aquaria have kept them for long periods. The scalloped hammerhead is the most frequently maintained large species, and it has been kept long term at public aquaria in most continents, but primarily in North America, Europe, and Asia. In 2014, fewer than 15 public aquaria in the world kept scalloped hammerheads. Great hammerheads have been kept at a few facilities in North America, including 1098: 752: 399: 922: 854: 820: 281: 157: 1055:, as it has proven easier to keep in captivity than the larger hammerhead species, and it has been bred at a handful of facilities. Nevertheless, at up to 1.5 m (5 ft) in length and with highly specialized requirements, very few private aquarists have the experience and resources necessary to maintain a bonnethead in captivity. The larger hammerhead species can reach more than twice that size and are considered difficult, even compared to most other similar-sized sharks (such as 1027: 961: 510:(called a "yolk sac placenta" or "pseudoplacenta"), through which the mother delivers sustenance until birth. Once the baby sharks are born, they are not taken care of by the parents in any way. Usually, a litter consists of 12 to 15 pups, except for the great hammerhead, which gives birth to litters of 20 to 40 pups. These baby sharks huddle together and swim toward warmer water until they are old enough and large enough to survive on their own. 621: 684: 290: 786: 718: 939: 905: 871: 837: 803: 769: 735: 701: 667: 638: 888: 1031: 1029: 1034: 1033: 1028: 1110:
hammerhead sharks alone are traded per year which is equivalent to 21,000 metric tons of biomass. However, most sharks that are caught are only used for their fins and then discarded. The actual meat of hammerheads is generally unwanted. Consumption of regular hammerhead meat has been recorded in countries such as
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They also have an increased binocular vision and depth of visual field as a result of the cephalofoil. The shape of the head was previously thought to help the shark find food, aiding in close-quarters maneuverability, and allowing sharp turning movement without losing stability. The unusual structure of its
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range from 0.9 to 6.0 m (2 ft 11 in to 19 ft 8 in) in length and weigh 3–580 kg (6.6–1,300 lb). One specimen caught off the Florida coast in 1906 weighed over 680 kg (1,500 lb). They are usually light gray and have a greenish tint. Their bellies are white,
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are a particular favorite, with the positioning of their (comparatively) smaller, crescent-shaped mouths underneath their T-shaped heads allowing for skilled skate, ray, and flounder hunting, among other seafloor-dwellers. These sharks will often be found swimming above the sand along the bottom of
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Humans are the number one threat to hammerhead sharks. Although they are not usually the primary target, hammerhead sharks are caught in fisheries all over the world. Tropical fisheries are the most common place for hammerheads to be caught because of their preference to reside in warm waters. The
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Shark fins are prized as a delicacy in certain countries in Asia (such as China), and overfishing is putting many hammerhead sharks at risk of extinction. Fishermen who harvest the animals typically cut off the fins and toss the remainder of the fish, which is often still alive, back into the sea.
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The hammer-like shape of the head may have evolved at least in part to enhance the animal's vision. The positioning of the eyes, mounted on the sides of the shark's distinctive hammer head, allows 360° of vision in the vertical plane, meaning the animals can see above and below them at all times.
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Shark fin traders say that hammerheads have some of the best quality fin needles which makes them good to eat when prepared properly. Hong Kong is the world's largest fin trade market and accounts for about 1.5% of the total annual amount of fins traded. It is estimated that around 375,000 great
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In native Hawaiian culture, sharks are considered to be gods of the sea, protectors of humans, and cleaners of excessive ocean life. Some of these sharks are believed to be family members who died and have been reincarnated into shark form, but others are considered man-eaters, also known as
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Pollom, R.; Carlson, J.; Charvet, P.; Avalos, C.; Bizzarro, J.; Blanco-Parra, M.P.; Briones Bell-Iloch, A.; Burgos-Vázquez, M.I.; Cardenosa, D.; Cevallos, A.; Derrick, D.; Espinoza, E.; Espinoza, M.; Mejía-Falla, P.A.; Morales-Saldaña, J.M.; Navia, A.F.; Pacoureau, N.; Pérez Jiménez, J.C.;
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which allows them to blend into the background when viewed from below and sneak up to their prey. Their heads have lateral projections that give them a hammer-like shape. While overall similar, this shape differs somewhat between species; examples are: a distinct T-shape in the
1225:. The hammerhead shark is thought to be the birth animal of some children. Hawaiian children who are born with the hammerhead shark as an animal sign are believed to be warriors and are meant to sail the oceans. Hammerhead sharks rarely pass through the waters of 566:
the ocean, stalking their prey. Their unique heads are further utilized as a tool (or weapon) if hunting rays and flatfishes; the shark uses its head to pin down and briefly stun the prey, and only eats once their quarry is clearly weakened and in shock. The
3036: 463:. The pores on the shark's head lead to sensory tubes, which detect electric fields generated by other living creatures. By distributing the receptors over a wider area, like a larger radio antenna, hammerheads can sweep for prey more effectively. 1106:
total number of hammerheads caught in fisheries is recorded in the Food and Agriculture Organization of the United Nations Global Capture Production dataset. The number steadily increased from 75 metric tons in 1990, to 6,313 metric tons by 2010.
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Pollom, R.; Barreto, R.; Charvet, P.; Chiaramonte, G.E.; Cuevas, J.M.; Faria, V.; Herman, K.; Lasso-Alcalá, O.; Marcante, F.; Mejía-Falla, P.A.; Montealegre-Quijano, S.; Motta, F.; Navia, A.F.; Nunes, J.; Paesch, L.; Rincon, G. (2020).
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and demand for their fins, an expensive delicacy. Among others, scientists expressed their concern about the plight of the scalloped hammerhead at the American Association for the Advancement of Science annual meeting in
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Pollom, R.; Avalos, C.; Bizzarro, J.; Burgos-Vázquez, M.I.; Cevallos, A.; Charvet, P.; Espinoza, M.; Faria, V.; Herman, K.; Mejía-Falla, P.A.; Navia, A.F.; Pérez-Jiménez, J.C.; Rincon, G.; Sosa-Nishizaki, O. (2020).
329:. Many different— but not necessarily mutually exclusive—functions have been postulated for the cephalofoil, including sensory reception, manoeuvering, and prey manipulation. The cephalofoil gives the shark superior 3025: 437:
to the rest of the hammerhead sharks. As the winghead shark has proportionately the largest "hammer" of the hammerhead sharks, this suggests that the first ancestral hammerhead sharks also had large hammers.
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Rigby, C.L.; Dulvy, N.K.; Barreto, R.; Carlson, J.; Fernando, D.; Fordham, S.; Francis, M.P.; Herman, K.; Jabado, R.W.; Liu, K.M.; Marshall, A.; Pacoureau, N.; Romanov, E.; Sherley, R.B.; Winker, H. (2019).
313:(a T-shape or "hammer"). The shark's eyes are placed one on either end of this T-shaped structure, with their small mouths directly centered and underneath. Most hammerhead species are placed in the genus 1030: 471:
Reproduction occurs only once a year for hammerhead sharks, and usually occurs with the male shark biting the female shark violently until she agrees to mate with him. The hammerhead sharks exhibit a
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Rigby, C.L.; Barreto, R.; Carlson, J.; Fernando, D.; Fordham, S.; Francis, M.P.; Herman, K.; Jabado, R.W.; Liu, K.M.; Marshall, A.; Pacoureau, N.; Romanov, E.; Sherley, R.B.; Winker, H. (2019).
2822: 451:, though, has been found to be instrumental in making the turns correctly, more often than the shape of its head, though it would also shift and provide lift. From what is known about the 2152:
Pollom, R.; Pérez Jiménez, J.C.; Bizzarro, J.; Burgos-Vázquez, M.I.; Cevallos, A.; Espinoza, M.; Herman, K.; Mejía-Falla, P.A.; Navia, A.F.; Sosa-Nishizaki, O.; Velez-Zuazo, X. (2020).
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Rigby, C.L.; Barreto, R.; Carlson, J.; Fernando, D.; Fordham, S.; Herman, K.; Jabado, R.W.; Liu, K.M.; Marshall, A.; Pacoureau, N.; Romanov, E.; Sherley, R.B.; Winker, H. (2019).
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Royer, Mark; Meyer, Carl; Royer, John; Maloney, Kelsey; Cardona, Edward; Blandino, Chloé; Fernandes Da Silva, Guilherme; Whittingham, Kate; Holland, Kim N. (2023).
1740: 1701: 2615: 1549:"Contributions to the tooth morphology in early embryos of three species of hammerhead sharks (Elasmobranchii: Sphyrnidae) and their evolutionary implications" 1355: 574:, eating other hammerhead sharks, including mothers consuming their own young. In addition to the typical animal prey, bonnetheads have been found to feed on 1967: 2761: 1944: 1828: 1229:, but many Maui natives believe that their swimming by is a sign that the gods are watching over the families, and the oceans are clean and balanced. 2791: 1679: 1515: 4088: 3099: 4127: 1607: 1576: 1460: 1298: 1863: 3263: 976:
since AD 1580. No human fatalities have been recorded. Most hammerhead shark species are too small to inflict serious damage to humans.
4217: 1332: 4212: 3002: 4062: 1415: 3231: 4101: 2971: 2792:"Husbandry of scalloped hammerhead sharks Sphyrna lewini (Griffith & Smith, 1834) at Reef HQ Aquarium, Townsville, Australia" 1490: 3061: 2515: 1385: 1266: 2881: 2739: 2683: 2062: 4106: 4222: 3174: 979: 4227: 3132: 2607: 1732: 1709: 2638: 1803: 455:, the shape of the hammerhead apparently has to do with an evolved sensory function. Like all sharks, hammerheads have 2923: 2859: 376:
Hammerheads have disproportionately small mouths compared to other shark species. Some species are also known to form
2719: 1456: 4179: 4132: 3256: 969: 414:(Carcharinidae). Based on DNA studies and fossils, the ancestor of the hammerheads probably lived in the Early 309:, named for the unusual and distinctive form of their heads, which are flattened and laterally extended into a 34: 2137:
sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the Caribbean and the Southwest Atlantic
4114: 1975: 1936: 1820: 570:, tending to be larger and more aggressive to its own kind than other hammerheads, occasionally engages in 386:
explained that hammerheads can be found in warm, tropical waters, but during the summer, they begin a mass
4010: 3997: 3601: 3481: 1520: 382: 136: 2222: 3249: 1671: 1525: 1086: 972:, humans have been subjects of 17 documented, unprovoked attacks by hammerhead sharks within the genus 156: 4171: 4015: 3161: 4184: 3592: 3583: 1261: 30: 3091: 2400: 2176: 1795: 1789: 2111: 1070: 293:
The hammer-like shape of the head means that hammerhead sharks can sweep for prey more effectively.
2493: 2447: 2353: 2307: 1599: 3760: 3421: 3339: 3127: 1548: 1448: 1286: 1150: 1855: 4158: 3937: 3430: 2547:""Breath holding" as a thermoregulation strategy in the deep-diving scalloped hammerhead shark" 1082: 345: 1997:
Meekan, M. G.; Virtue, P.; Marcus, L.; Clements, K. D.; Nichols, P. D.; Revill, A. T. (2022).
1015:. The young swim mostly in shallow waters along shores all over the world to avoid predators. 4153: 4093: 3463: 3454: 2151: 1097: 571: 460: 4145: 1763: 4036: 3984: 3975: 3843: 3816: 3709: 3702: 3678: 3643: 3634: 3472: 3222: 2806: 2558: 2010: 1039: 762: 694: 518: 366: 144: 2994: 2199: 8: 4207: 3879: 3834: 3825: 3518: 3509: 3499: 3183: 1885:
Chapman, DD; Shivji, MS; Louis, E; Sommer, J; Fletcher, H; Prodöhl, PA (22 August 2007).
1111: 898: 728: 341: 3203: 2810: 2562: 2014: 398: 3919: 3559: 3550: 3373: 3364: 3228: 2582: 2133: 2044: 1913: 1886: 1141:, bringing shark fishing and commerce of these species under licensing and regulation. 1074: 1003: 999: 484: 340:
Hammerheads are found worldwide, preferring life in warmer waters along coastlines and
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The great and the scalloped hammerheads are listed on the World Conservation Union's (
4140: 4023: 3888: 3625: 3273: 3026:"Indigenous knowledge and cultural values of hammerhead sharks in Northern Australia" 2715: 2679: 2586: 2574: 2088: 2048: 2036: 2028: 1918: 1799: 1652: 1568: 1482: 1238: 1194: 1166: 932: 751: 426: 422: 370: 228: 2470: 2424: 2330: 2284: 2281: 2246: 1393: 1129:
In March 2013, three endangered, commercially valuable sharks, the hammerheads, the
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Gonzalez, C., Postaire, B., Driggers, W., Caballero, S. & Chapman, D. (2024):
921: 410:, only their teeth are commonly found as fossils. Their closest relatives are the 4028: 3659: 3397: 3388: 3235: 2421: 1891: 1174: 1052: 853: 819: 522: 475:
mode of reproduction with females giving birth to live young. Like other sharks,
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Elasmobranch Husbandry Manual: Captive Care of Sharks, Rays, and their Relatives
344:. Unlike most sharks, some hammerhead species will congregate and swim in large 3792: 3783: 3749: 3731: 3722: 3669: 3326: 3310: 3304: 3122: 1564: 631: 503:
is exhausted, the depleted yolk sac transforms into a structure analogous to a
452: 430: 320: 262: 208: 198: 3241: 280: 4201: 3960: 3536: 3157: 2479: 2468: 2433: 2386: 2339: 2328: 2293: 2255: 2208: 2162: 2097: 2032: 1449:"Hammerhead shark study shows cascade of evolution affected size, head shape" 1253: 1020: 620: 476: 411: 243: 94: 2970:(Report). National Marine Fisheries Service, Office of Protected Resources. 2649: 2570: 2243: 3350: 2911: 2847: 2578: 2040: 1922: 1904: 1656: 1572: 1213:; it is considered to be one of the most respected sharks of the ocean, an 1057: 434: 2374: 1101:
Most, if not all, hammerhead shark species are threatened with extinction.
4075: 3969: 3616: 3193: 2762:"The Bonnethead Shark Sphyrna tiburo: Is it Suitable for Home Aquariums?" 1764:"Great Hammerhead Shark - Lifestyle, Diet, and More - Wildlife Explained" 1416:"Marine Species ID: Great Hammerhead vs. Scalloped and Smooth Hammerhead" 1198: 1170: 1162: 1062: 1007: 583: 558: 69: 537:
without the need for a male. This was the first shark known to do this.
380:. In the evening, like most other sharks, they become solitary hunters. 3906: 3870: 3445: 3412: 3298: 1647: 1630: 1202: 864: 579: 530: 514: 472: 114: 79: 3184:"Electroreception in juvenile scalloped hammerhead and sandbar sharks" 2709: 1247: 960: 4080: 4049: 3852: 3574: 2789: 2023: 1998: 1134: 1115: 984: 796: 683: 168: 119: 4067: 3931: 4054: 3954: 3292: 3207: 3166: 2962:
Miller, Margaret H.; Carlson, J.; Hogan, L.; Kobayashi, D. (2014).
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and often represented in cultural artefacts such as the elaborate
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VanderWright, W.J.; Carlson, J.; Pollom, R.; Dulvy, N.K. (2020).
1089:(Las Vegas). Smooth hammerheads have also been kept in the past. 988: 887: 717: 554: 488: 415: 357: 315: 269: 124: 99: 1547:
Mello, Waldiney; Brito, Paulo Marques Machado (September 2013).
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There are ten distinct species of Hammerhead shark in the wild:
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Smith, M.; D. Warmolts; D. Thoney; R. Hueter, eds. (2004).
1226: 995: 546: 526: 500: 1996: 1483:"Hammerhead shark | Diet, Size, & Facts | Britannica" 1884: 2063:"Hammerhead Shark - an overview | ScienceDirect Topics" 2544: 406:
Since sharks do not have mineralized bones and rarely
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McComb, D. Michelle; et al. (27 November 2009).
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McComb, D. M.; Tricas, T. C.; Kajiura, S. M. (2009).
1006:. The status given to these sharks is as a result of 2964:
Status review report : great hammerhead shark (
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Hammerhead sharks eat a large range of prey such as
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during the day, becoming solitary hunters at night.
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10.2305/IUCN.UK.2020-3.RLTS.T152783714A172115852.en
1850: 1848: 1846: 1628: 1217:. Many Hawaiian families believe that they have an 2790:Tristram, H.; S. Thomas; L. Squire-Junior (2014). 2608:"Panamanian officials find half ton of shark fins" 983:Man carrying a hammerhead shark along a street in 4199: 1843: 1353: 1221:watching over them and protecting them from the 3271: 3190:(2002). Attempts to explain the "hammer" shape. 3120: 2785: 2783: 2674:Compagno, L.; M. Dando & S. Fowler (2004). 2401:10.2305/IUCN.UK.2021-3.RLTS.T39387A205765567.en 2177:10.2305/IUCN.UK.2020-3.RLTS.T44591A124434064.en 1002:, whereas the smalleye hammerhead is listed as 2112:10.2305/IUCN.UK.2016-1.RLTS.T41810A68623209.en 1051:The relatively small bonnethead is regular at 3257: 2636: 2494:10.2305/IUCN.UK.2019-3.RLTS.T39388A2921825.en 2448:10.2305/IUCN.UK.2020-3.RLTS.T60202A3091946.en 2354:10.2305/IUCN.UK.2019-3.RLTS.T39386A2920499.en 2308:10.2305/IUCN.UK.2020-3.RLTS.T60201A3091753.en 1968:"This Shark Eats Grass, and No One Knows Why" 1631:"Enhanced visual fields in hammerhead sharks" 1356:"Hammerhead Shark Captured in Florida Waters" 365:, a rounded head with a central notch in the 3123:"Shark highly respected in Hawaiian culture" 3054: 2780: 2705: 2703: 2701: 2699: 2697: 2695: 2667: 2126: 1297:. University of Michigan Museum of Zoology. 402:A hammerhead shark gliding along the sea bed 3507: 1965: 1724: 1309:– via animaldiversity.ummz.umich.edu. 955: 15: 3264: 3250: 3186:by Stephen M. Kajiura and Kim N. Holland, 2516:"Statistics on Attacking Species of Shark" 1733:"Why the hammerhead shark@ got its hammer" 1546: 920: 886: 852: 818: 784: 750: 716: 682: 619: 279: 135: 16: 2736:"Babies Of The S.E.A. – Bonnethead Shark" 2692: 2492: 2446: 2399: 2352: 2306: 2221: 2175: 2110: 2022: 1912: 1787: 1761: 1646: 1321:"Record Hammerhead Pregnant With 55 Pups" 393: 3225:, Australian Marine Conservation Society 3023: 1999:"The world's largest omnivore is a fish" 1591: 1144: 1096: 1025: 978: 959: 479:is internal, with the male transferring 397: 288: 24:This is an accepted version of this page 3156: 3084: 2992: 2087:Smart, J.J.; Simpfendorfer, C. (2016). 1284: 418:epoch about 20 million years ago. 369:, and an unnotched rounded head in the 14: 4200: 2892:from the original on 14 September 2017 2768:from the original on 14 September 2017 2742:from the original on 14 September 2017 2639:"Shark's fin soup – eat without guilt" 2614:. Associated Press. 25 February 2011. 1818: 1812: 1762:Explained, Wildlife (5 January 2022). 1730: 1702:"World's Deadliest: Hammerhead Sharks" 1669: 1600:"Origin and Evolution of the 'Hammer'" 1366:from the original on 20 September 2022 1301:from the original on 29 September 2012 1267:List of prehistoric cartilaginous fish 1205:. The hammerhead shark, also known as 3936: 3935: 3245: 3135:from the original on 5 September 2015 3121:Hurley, Timothy (28 September 2004). 3042:from the original on 16 November 2020 3024:Gerhardt, Katrin (30 November 2018). 2995:"'Historic' day for shark protection" 2957: 2955: 2953: 2951: 2949: 2947: 2945: 2943: 2941: 2926:from the original on 22 December 2015 2526:from the original on 15 December 2017 1947:from the original on 30 December 2018 1831:from the original on 18 February 2019 1682:from the original on 25 February 2010 1610:from the original on 27 December 2018 1313: 1165:worn for ceremonial dances, known as 1153:, the hammerhead shark, known as the 4172:FD1087D9-FFA4-4A55-FF67-A2A64FC9F9D9 2974:from the original on 5 February 2023 1887:"Virgin birth in a hammerhead shark" 1866:from the original on 30 January 2019 1510: 1508: 1443: 1441: 429:of the hammerhead sharks showed the 3204:"New shark discovered in US waters" 3188:The Journal of Experimental Biology 2630: 2480:IUCN Red List of Threatened Species 2434:IUCN Red List of Threatened Species 2387:IUCN Red List of Threatened Species 2340:IUCN Red List of Threatened Species 2294:IUCN Red List of Threatened Species 2256:IUCN Red List of Threatened Species 2209:IUCN Red List of Threatened Species 2163:IUCN Red List of Threatened Species 2098:IUCN Red List of Threatened Species 1731:Barley, Shanta (26 February 2019). 1524:. 10 September 2010. Archived from 1209:, is not considered a man-eater or 1177:is known for his representations of 964:A hammerhead shark in shallow water 586:were also found to be omnivorous). 48: 3102:from the original on 1 August 2020 3072:from the original on 12 April 2020 2938: 2828:from the original on 7 August 2020 1597: 1426:from the original on 8 August 2021 1354:New-York Tribune (15 April 1906). 49: 4239: 4218:Species endangered by use as food 3150: 3005:from the original on 10 June 2013 2862:from the original on 27 June 2015 2637:Giam Choo Hoo (1 December 2006). 2618:from the original on 12 June 2018 2520:Florida Museum of Natural History 1743:from the original on 3 March 2021 1672:"Hammerhead shark mystery solved" 1505: 1493:from the original on 24 July 2023 1463:from the original on 1 April 2019 1457:University of Colorado at Boulder 1438: 1169:(dari). They are associated with 517:shark was found to be capable of 483:to the female through one of two 4213:Extant Miocene first appearances 3238:on Check123 - Video Encyclopedia 2764:. TFH Magazine. September 2007. 1819:Martin, R. Aidan (August 1993). 1579:from the original on 2 June 2018 1246: 937: 903: 869: 835: 801: 767: 733: 699: 665: 636: 310: 155: 67: 3114: 3017: 2993:McGrath, Matt (11 March 2013). 2986: 2904: 2874: 2840: 2754: 2738:. SEA Aquarium. November 2013. 2728: 2600: 2538: 2508: 2462: 2415: 2368: 2322: 2275: 2237: 2191: 2145: 2080: 2055: 1990: 1959: 1943:. Enchanted Learning Software. 1929: 1878: 1781: 1755: 1694: 1663: 1635:Journal of Experimental Biology 1622: 1137:, were added to Appendix II of 1071:Atlantis Paradise Island Resort 1046: 970:International Shark Attack File 466: 2916:(Rueppell, 1837) in Captivity" 2819:10.1016/j.zoolgart.2014.08.002 2678:. HarperCollins. p. 325. 1540: 1475: 1408: 1378: 1347: 1278: 582:species of shark (since then, 441: 351: 13: 1: 3602:African ribbontail catshark ( 3482:Straight-tooth weasel shark ( 1331:. 1 July 2006. Archived from 1272: 1092: 2882:"Scalloped hammerhead shark" 2376:Sosa-Nishizaki, O. (2021) . 1966:Hannah Lang (29 June 2017). 1794:. World Book, Inc. pp.  1791:Hammerheads and Other Sharks 1706:video.nationalgeographic.com 495:are at first sustained by a 390:in search of colder waters. 323:is placed in its own genus, 7: 4223:Taxa named by Theodore Gill 3593:Pygmy ribbontail catshark ( 3584:Cuban ribbontail catshark ( 3175:Animal Diversity Web Genus 2141:Zootaxa, 5512 (4): 491–511. 1232: 10: 4244: 4228:Vertebrate parthenogenesis 2714:. Ohio Biological Survey. 2216:: e.T152783714A172115852. 1788:Otfinoski, Steven (2000). 1565:10.1016/j.crvi.2013.04.017 1236: 1087:Shark Reef at Mandalay Bay 1023:, is lethal to the shark. 589: 549:(including other sharks), 523:automictic parthenogenesis 3944: 3905: 3805: 3781: 3768: 3748: 3720: 3700: 3667: 3658: 3614: 3572: 3548: 3535: 3498: 3443: 3422:Australian weasel shark ( 3410: 3386: 3362: 3349: 3325: 3281: 1262:List of hammerhead sharks 1237:For a topical guide, see 278: 258: 251: 152:Scientific classification 150: 143: 134: 58: 3431:Sicklefin weasel shark ( 3229:Hammerhead Shark - Video 3194:Great hammerhead shark, 3170:. February 2011 version. 3160:; Pauly, Daniel (eds.). 3143:– via Moolelo.com. 1937:"Great hammerhead shark" 1553:Comptes Rendus Biologies 1019:This practice, known as 956:Relationship with humans 31:latest accepted revision 3464:Atlantic weasel shark ( 3455:Whitetip weasel shark ( 3128:The Honolulu Advertiser 3062:"Dr Ken Thaiday Senior" 2852:(Griffith & Smith)" 2848:"Scalloped Hammerhead, 2571:10.1126/science.add4445 1193:. These sharks include 1151:Torres Strait Islanders 540: 3844:Scalloped hammerhead ( 3817:Scalloped bonnethead ( 3710:Dwarf false catshark ( 3679:Slender smooth-hound ( 3635:Magnificent catshark ( 3473:Slender weasel shark ( 3234:1 October 2022 at the 3180:with species sub-pages 2799:Der Zoologische Garten 2394:: e.T39387A205765567. 2170:: e.T44591A124434064. 1905:10.1098/rsbl.2007.0189 1521:NationalGeographic.com 1102: 1083:Mote Marine Laboratory 1043: 991: 965: 525:, in which a female's 403: 394:Taxonomy and evolution 294: 65:Early Miocene – recent 4154:Paleobiology Database 3880:Smalleye hammerhead ( 3835:Carolina hammerhead ( 3826:Whitefin hammerhead ( 3519:Barbeled houndshark ( 2105:: e.T41810A68623209. 1941:EnchantedLearning.com 1825:Rodale's Scuba Diving 1157:, is a common family 1145:Cultural significance 1100: 1038: 982: 963: 909:Critically Endangered 841:Critically Endangered 807:Critically Endangered 773:Critically Endangered 705:Critically Endangered 608:IUCN Red List status 499:. When the supply of 461:ampullae of Lorenzini 459:sensory pores called 401: 305:that form the family 292: 3560:Harlequin catshark ( 3374:Snaggletooth shark ( 3033:Marine Diversity Hub 2912:"Great Hammerheads, 2487:: e.T39388A2921825. 2441:: e.T60202A3091946. 2347:: e.T39386A2920499. 2301:: e.T60201A3091753. 1860:AquaticCommunity.com 1362:. New-York Tribune. 1295:Animal Diversity Web 1285:Hessing, S. (2000). 1040:Scalloped hammerhead 763:Scalloped hammerhead 695:Scalloped bonnethead 519:asexual reproduction 367:scalloped hammerhead 145:Scalloped hammerhead 3889:Smooth hammerhead ( 3774:(Hammerhead sharks) 3626:Graceful catshark ( 3541:(Finback catsharks) 3162:"Family Sphyrnidae" 2811:2014DZGar..83...93T 2676:Sharks of the World 2655:on 21 February 2007 2563:2023Sci...380..651R 2015:2022Ecol..103E3818M 1972:National Geographic 1821:"If I Had a Hammer" 1604:elasmo-research.org 1528:on 10 November 2016 1360:Chronicling America 1112:Trinidad and Tobago 1085:(Florida), and the 998:) 2008 Red List as 899:Smalleye hammerhead 729:Carolina hammerhead 485:intromittent organs 383:National Geographic 342:continental shelves 21:Page version status 3862:Great hammerhead ( 3688:Sulu gollumshark ( 2612:WashingtonPost.com 2263:: e.T39385A2918526 1856:"Hammerhead Shark" 1768:Wildlife Explained 1648:10.1242/jeb.032615 1598:Martin, R. Aidan. 1516:"Hammerhead Shark" 1487:www.britannica.com 1386:"Hammerhead Shark" 1195:great white sharks 1181:in his sculptural 1173:. Renowned artist 1103: 1075:Adventure Aquarium 1044: 992: 966: 404: 295: 27: 4195: 4194: 4141:Open Tree of Life 3938:Taxon identifiers 3929: 3928: 3901: 3900: 3744: 3743: 3654: 3653: 3531: 3530: 3494: 3493: 3398:Hooktooth shark ( 3223:Hammerhead Sharks 3066:Australia Council 2685:978-0-00-713610-0 2646:The Straits Times 2557:(6645): 651–655. 2067:sciencedirect.com 1239:Outline of sharks 1185:and other works. 1036: 968:According to the 953: 952: 944: 933:Smooth hammerhead 910: 876: 842: 808: 774: 740: 706: 672: 643: 611:Population trend 491:. The developing 427:phylogenetic tree 423:mitochondrial DNA 371:smooth hammerhead 299:hammerhead sharks 287: 286: 247: 229:Carcharhiniformes 59:Hammerhead sharks 39:23 September 2024 18: 4235: 4188: 4187: 4175: 4174: 4162: 4161: 4149: 4148: 4136: 4135: 4123: 4122: 4120:NHMSYS0021053490 4110: 4109: 4097: 4096: 4084: 4083: 4071: 4070: 4058: 4057: 4045: 4044: 4032: 4031: 4019: 4018: 4006: 4005: 3993: 3992: 3980: 3979: 3978: 3965: 3964: 3963: 3933: 3932: 3912: 3793:Winghead shark ( 3779: 3778: 3775: 3755: 3732:False catshark ( 3665: 3664: 3546: 3545: 3542: 3505: 3504: 3424:H. australiensis 3360: 3359: 3356: 3332: 3331:(Requiem sharks) 3266: 3259: 3252: 3243: 3242: 3219: 3217: 3215: 3196:Sphyrna mokarran 3171: 3145: 3144: 3142: 3140: 3118: 3112: 3111: 3109: 3107: 3088: 3082: 3081: 3079: 3077: 3058: 3052: 3051: 3049: 3047: 3041: 3030: 3021: 3015: 3014: 3012: 3010: 2990: 2984: 2983: 2981: 2979: 2966:Sphyrna mokarran 2959: 2936: 2935: 2933: 2931: 2914:Sphyrna mokarran 2908: 2902: 2901: 2899: 2897: 2878: 2872: 2871: 2869: 2867: 2844: 2838: 2837: 2835: 2833: 2827: 2796: 2787: 2778: 2777: 2775: 2773: 2758: 2752: 2751: 2749: 2747: 2732: 2726: 2725: 2707: 2690: 2689: 2671: 2665: 2664: 2662: 2660: 2654: 2648:. Archived from 2643: 2634: 2628: 2627: 2625: 2623: 2604: 2598: 2597: 2595: 2593: 2542: 2536: 2535: 2533: 2531: 2512: 2506: 2505: 2503: 2501: 2496: 2466: 2460: 2459: 2457: 2455: 2450: 2419: 2413: 2412: 2410: 2408: 2403: 2372: 2366: 2365: 2363: 2361: 2356: 2333:Sphyrna mokarran 2326: 2320: 2319: 2317: 2315: 2310: 2279: 2273: 2272: 2270: 2268: 2241: 2235: 2234: 2232: 2230: 2225: 2202:Sphyrna gilberti 2195: 2189: 2188: 2186: 2184: 2179: 2149: 2143: 2130: 2124: 2123: 2121: 2119: 2114: 2091:Eusphyra blochii 2084: 2078: 2077: 2075: 2073: 2059: 2053: 2052: 2026: 2024:10.1002/ecy.3818 1994: 1988: 1987: 1985: 1983: 1978:on 23 April 2019 1974:. Archived from 1963: 1957: 1956: 1954: 1952: 1933: 1927: 1926: 1916: 1882: 1876: 1875: 1873: 1871: 1852: 1841: 1840: 1838: 1836: 1816: 1810: 1809: 1785: 1779: 1778: 1776: 1774: 1759: 1753: 1752: 1750: 1748: 1728: 1722: 1721: 1719: 1717: 1712:on 23 April 2015 1708:. Archived from 1698: 1692: 1691: 1689: 1687: 1667: 1661: 1660: 1650: 1626: 1620: 1619: 1617: 1615: 1595: 1589: 1588: 1586: 1584: 1544: 1538: 1537: 1535: 1533: 1512: 1503: 1502: 1500: 1498: 1479: 1473: 1472: 1470: 1468: 1453:ScienceDaily.com 1445: 1436: 1435: 1433: 1431: 1412: 1406: 1405: 1403: 1401: 1392:. Archived from 1390:sharks-world.com 1382: 1376: 1375: 1373: 1371: 1351: 1345: 1344: 1342: 1340: 1329:Associated Press 1317: 1311: 1310: 1308: 1306: 1282: 1256: 1251: 1250: 1131:oceanic whitetip 1079:Georgia Aquarium 1067:sand tiger shark 1053:public aquariums 1037: 942: 941: 924: 908: 907: 890: 874: 873: 856: 840: 839: 831:Great hammerhead 826:Sphyrna mokarran 822: 806: 805: 788: 772: 771: 754: 738: 737: 724:Sphyrna gilberti 720: 704: 703: 686: 670: 669: 661:Shovelbill shark 641: 640: 627:Eusphyra blochii 623: 597: 596: 568:great hammerhead 457:electroreceptory 388:migration period 363:great hammerhead 335:depth perception 331:binocular vision 283: 242: 160: 159: 139: 129: 66: 62:Temporal range: 56: 55: 51:Family of sharks 4243: 4242: 4238: 4237: 4236: 4234: 4233: 4232: 4198: 4197: 4196: 4191: 4183: 4178: 4170: 4165: 4157: 4152: 4144: 4139: 4131: 4126: 4118: 4113: 4105: 4100: 4092: 4087: 4079: 4074: 4066: 4061: 4053: 4048: 4040: 4035: 4027: 4022: 4014: 4009: 4001: 3996: 3988: 3983: 3974: 3973: 3968: 3959: 3958: 3953: 3940: 3930: 3925: 3910: 3909: 3897: 3801: 3773: 3772: 3764: 3753: 3752: 3740: 3716: 3696: 3660:Pseudotriakidae 3650: 3610: 3568: 3540: 3539: 3527: 3490: 3457:P. leucolomatus 3439: 3406: 3382: 3355:(Weasel sharks) 3354: 3353: 3345: 3330: 3329: 3321: 3277: 3270: 3236:Wayback Machine 3213: 3211: 3202: 3199:, MarineBio.org 3153: 3148: 3138: 3136: 3119: 3115: 3105: 3103: 3096:Art Gallery NSW 3090: 3089: 3085: 3075: 3073: 3068:. 15 May 2019. 3060: 3059: 3055: 3045: 3043: 3039: 3028: 3022: 3018: 3008: 3006: 2991: 2987: 2977: 2975: 2960: 2939: 2929: 2927: 2910: 2909: 2905: 2895: 2893: 2880: 2879: 2875: 2865: 2863: 2846: 2845: 2841: 2831: 2829: 2825: 2805:(4–6): 93–113. 2794: 2788: 2781: 2771: 2769: 2760: 2759: 2755: 2745: 2743: 2734: 2733: 2729: 2722: 2708: 2693: 2686: 2672: 2668: 2658: 2656: 2652: 2641: 2635: 2631: 2621: 2619: 2606: 2605: 2601: 2591: 2589: 2543: 2539: 2529: 2527: 2514: 2513: 2509: 2499: 2497: 2473:Sphyrna zygaena 2467: 2463: 2453: 2451: 2420: 2416: 2406: 2404: 2373: 2369: 2359: 2357: 2327: 2323: 2313: 2311: 2280: 2276: 2266: 2264: 2242: 2238: 2228: 2226: 2196: 2192: 2182: 2180: 2150: 2146: 2131: 2127: 2117: 2115: 2085: 2081: 2071: 2069: 2061: 2060: 2056: 1995: 1991: 1981: 1979: 1964: 1960: 1950: 1948: 1935: 1934: 1930: 1892:Biology Letters 1883: 1879: 1869: 1867: 1854: 1853: 1844: 1834: 1832: 1817: 1813: 1806: 1786: 1782: 1772: 1770: 1760: 1756: 1746: 1744: 1729: 1725: 1715: 1713: 1700: 1699: 1695: 1685: 1683: 1668: 1664: 1627: 1623: 1613: 1611: 1596: 1592: 1582: 1580: 1545: 1541: 1531: 1529: 1514: 1513: 1506: 1496: 1494: 1481: 1480: 1476: 1466: 1464: 1459:. 19 May 2010. 1447: 1446: 1439: 1429: 1427: 1414: 1413: 1409: 1399: 1397: 1384: 1383: 1379: 1369: 1367: 1352: 1348: 1338: 1336: 1335:on 22 June 2011 1319: 1318: 1314: 1304: 1302: 1283: 1279: 1275: 1252: 1245: 1242: 1235: 1175:Ken Thaiday Snr 1147: 1095: 1049: 1026: 958: 928:Sphyrna zygaena 592: 543: 469: 444: 396: 354: 301:are a group of 241: 154: 130: 128: 127: 122: 117: 112: 107: 102: 97: 92: 87: 82: 77: 72: 64: 63: 60: 52: 47: 46: 45: 44: 43: 42: 26: 12: 11: 5: 4241: 4231: 4230: 4225: 4220: 4215: 4210: 4193: 4192: 4190: 4189: 4176: 4163: 4150: 4137: 4124: 4111: 4098: 4085: 4072: 4059: 4046: 4033: 4020: 4007: 3994: 3981: 3966: 3950: 3948: 3942: 3941: 3927: 3926: 3924: 3923: 3915: 3913: 3903: 3902: 3899: 3898: 3896: 3895: 3886: 3877: 3868: 3859: 3850: 3841: 3832: 3823: 3813: 3811: 3803: 3802: 3800: 3799: 3789: 3787: 3776: 3766: 3765: 3761:Scyliorhinidae 3758: 3756: 3750:Scyliorhinidae 3746: 3745: 3742: 3741: 3739: 3738: 3728: 3726: 3718: 3717: 3708: 3706: 3698: 3697: 3695: 3694: 3685: 3675: 3673: 3662: 3656: 3655: 3652: 3651: 3649: 3648: 3641: 3632: 3622: 3620: 3612: 3611: 3609: 3608: 3599: 3590: 3580: 3578: 3570: 3569: 3567: 3566: 3556: 3554: 3543: 3533: 3532: 3529: 3528: 3526: 3525: 3515: 3513: 3502: 3500:Leptochariidae 3496: 3495: 3492: 3491: 3489: 3488: 3479: 3470: 3461: 3451: 3449: 3441: 3440: 3438: 3437: 3428: 3418: 3416: 3408: 3407: 3405: 3404: 3394: 3392: 3384: 3383: 3381: 3380: 3370: 3368: 3357: 3347: 3346: 3344: 3343: 3340:Carcharhinidae 3335: 3333: 3327:Carcharhinidae 3323: 3322: 3320: 3319: 3313: 3311:Elasmobranchii 3307: 3305:Chondrichthyes 3301: 3295: 3289: 3282: 3279: 3278: 3269: 3268: 3261: 3254: 3246: 3240: 3239: 3226: 3220: 3210:. 10 June 2006 3200: 3191: 3181: 3172: 3158:Froese, Rainer 3152: 3151:External links 3149: 3147: 3146: 3113: 3083: 3053: 3016: 2985: 2937: 2920:elasmollet.org 2903: 2873: 2856:elasmollet.org 2850:Sphyrna lewini 2839: 2779: 2753: 2727: 2720: 2691: 2684: 2666: 2629: 2599: 2537: 2507: 2461: 2414: 2380:Sphyrna tiburo 2367: 2321: 2274: 2249:Sphyrna lewini 2236: 2190: 2156:Sphyrna corona 2144: 2135:Sphyrna alleni 2125: 2079: 2054: 1989: 1958: 1928: 1877: 1842: 1811: 1805:978-0716612100 1804: 1780: 1754: 1723: 1693: 1662: 1641:(24): 4010–8. 1621: 1590: 1559:(9): 466–471. 1539: 1504: 1474: 1437: 1407: 1396:on 7 July 2011 1377: 1346: 1325:Discovery News 1312: 1289:Sphyrna tiburo 1276: 1274: 1271: 1270: 1269: 1264: 1258: 1257: 1234: 1231: 1146: 1143: 1094: 1091: 1077:(New Jersey), 1048: 1045: 957: 954: 951: 950: 948: 945: 935: 930: 925: 917: 916: 914: 911: 901: 896: 891: 883: 882: 880: 877: 867: 862: 860:Sphyrna tiburo 857: 849: 848: 846: 843: 833: 828: 823: 815: 814: 812: 809: 799: 794: 789: 781: 780: 778: 775: 765: 760: 758:Sphyrna lewini 755: 747: 746: 744: 741: 739:Data Deficient 731: 726: 721: 713: 712: 710: 707: 697: 692: 690:Sphyrna corona 687: 679: 678: 676: 673: 663: 658: 656:Sphyrna alleni 653: 650: 649: 647: 644: 634: 632:Winghead shark 629: 624: 616: 615: 612: 609: 606: 603: 600: 591: 588: 542: 539: 468: 465: 453:winghead shark 443: 440: 431:winghead shark 412:requiem sharks 395: 392: 353: 350: 321:winghead shark 285: 284: 276: 275: 274: 273: 266: 256: 255: 249: 248: 236: 232: 231: 226: 222: 221: 216: 212: 211: 209:Elasmobranchii 206: 202: 201: 199:Chondrichthyes 196: 192: 191: 186: 182: 181: 176: 172: 171: 166: 162: 161: 148: 147: 141: 140: 132: 131: 123: 118: 113: 108: 103: 98: 93: 88: 83: 78: 73: 68: 61: 50: 28: 22: 19: 17: 9: 6: 4: 3: 2: 4240: 4229: 4226: 4224: 4221: 4219: 4216: 4214: 4211: 4209: 4206: 4205: 4203: 4186: 4181: 4177: 4173: 4168: 4164: 4160: 4155: 4151: 4147: 4142: 4138: 4134: 4129: 4125: 4121: 4116: 4112: 4108: 4103: 4099: 4095: 4090: 4086: 4082: 4077: 4073: 4069: 4064: 4060: 4056: 4051: 4047: 4043: 4038: 4034: 4030: 4025: 4021: 4017: 4012: 4008: 4004: 3999: 3995: 3991: 3986: 3982: 3977: 3971: 3967: 3962: 3956: 3952: 3951: 3949: 3947: 3943: 3939: 3934: 3921: 3917: 3916: 3914: 3911:(Houndsharks) 3908: 3904: 3894: 3892: 3887: 3885: 3883: 3878: 3876: 3874: 3869: 3867: 3865: 3860: 3858: 3856: 3851: 3849: 3847: 3842: 3840: 3838: 3833: 3831: 3829: 3824: 3822: 3820: 3815: 3814: 3812: 3810: 3809: 3804: 3798: 3796: 3791: 3790: 3788: 3786: 3785: 3780: 3777: 3771: 3767: 3762: 3757: 3751: 3747: 3737: 3735: 3730: 3729: 3727: 3725: 3724: 3723:Pseudotriakis 3719: 3715: 3713: 3707: 3705: 3704: 3699: 3693: 3691: 3686: 3684: 3682: 3681:G. attenuatus 3677: 3676: 3674: 3672: 3671: 3666: 3663: 3661: 3657: 3647: 3646: 3642: 3640: 3638: 3637:P. magnificum 3633: 3631: 3629: 3624: 3623: 3621: 3619: 3618: 3613: 3607: 3605: 3600: 3598: 3596: 3595:E. radcliffei 3591: 3589: 3587: 3582: 3581: 3579: 3577: 3576: 3571: 3565: 3563: 3558: 3557: 3555: 3553: 3552: 3547: 3544: 3538: 3537:Proscylliidae 3534: 3524: 3522: 3517: 3516: 3514: 3512: 3511: 3506: 3503: 3501: 3497: 3487: 3485: 3480: 3478: 3476: 3471: 3469: 3467: 3466:P. pectoralis 3462: 3460: 3458: 3453: 3452: 3450: 3448: 3447: 3442: 3436: 3434: 3433:H. microstoma 3429: 3427: 3425: 3420: 3419: 3417: 3415: 3414: 3409: 3403: 3401: 3400:C. macrostoma 3396: 3395: 3393: 3391: 3390: 3385: 3379: 3377: 3372: 3371: 3369: 3367: 3366: 3361: 3358: 3352: 3348: 3341: 3337: 3336: 3334: 3328: 3324: 3318: 3314: 3312: 3308: 3306: 3302: 3300: 3296: 3294: 3290: 3288: 3284: 3283: 3280: 3275: 3267: 3262: 3260: 3255: 3253: 3248: 3247: 3244: 3237: 3233: 3230: 3227: 3224: 3221: 3209: 3205: 3201: 3198: 3197: 3192: 3189: 3185: 3182: 3179: 3178: 3173: 3169: 3168: 3163: 3159: 3155: 3154: 3134: 3130: 3129: 3124: 3117: 3101: 3097: 3093: 3092:"Ken Thaiday" 3087: 3071: 3067: 3063: 3057: 3038: 3034: 3027: 3020: 3004: 3000: 2996: 2989: 2973: 2969: 2967: 2958: 2956: 2954: 2952: 2950: 2948: 2946: 2944: 2942: 2925: 2921: 2917: 2915: 2907: 2891: 2887: 2883: 2877: 2861: 2857: 2853: 2851: 2843: 2824: 2820: 2816: 2812: 2808: 2804: 2800: 2793: 2786: 2784: 2767: 2763: 2757: 2741: 2737: 2731: 2723: 2721:9780867271522 2717: 2713: 2706: 2704: 2702: 2700: 2698: 2696: 2687: 2681: 2677: 2670: 2651: 2647: 2640: 2633: 2617: 2613: 2609: 2603: 2588: 2584: 2580: 2576: 2572: 2568: 2564: 2560: 2556: 2552: 2548: 2541: 2525: 2521: 2517: 2511: 2495: 2490: 2486: 2482: 2481: 2476: 2474: 2465: 2449: 2444: 2440: 2436: 2435: 2430: 2428: 2427:Sphyrna tudes 2418: 2402: 2397: 2393: 2389: 2388: 2383: 2381: 2371: 2355: 2350: 2346: 2342: 2341: 2336: 2334: 2325: 2309: 2304: 2300: 2296: 2295: 2290: 2288: 2287:Sphyrna media 2278: 2262: 2258: 2257: 2252: 2250: 2240: 2224: 2219: 2215: 2211: 2210: 2205: 2203: 2194: 2178: 2173: 2169: 2165: 2164: 2159: 2157: 2148: 2142: 2138: 2136: 2129: 2113: 2108: 2104: 2100: 2099: 2094: 2092: 2083: 2068: 2064: 2058: 2050: 2046: 2042: 2038: 2034: 2030: 2025: 2020: 2016: 2012: 2009:(12): e3818. 2008: 2004: 2000: 1993: 1977: 1973: 1969: 1962: 1946: 1942: 1938: 1932: 1924: 1920: 1915: 1910: 1906: 1902: 1898: 1894: 1893: 1888: 1881: 1865: 1861: 1857: 1851: 1849: 1847: 1830: 1826: 1822: 1815: 1807: 1801: 1797: 1793: 1792: 1784: 1769: 1765: 1758: 1742: 1738: 1737:New Scientist 1734: 1727: 1711: 1707: 1703: 1697: 1681: 1677: 1673: 1666: 1658: 1654: 1649: 1644: 1640: 1636: 1632: 1625: 1609: 1605: 1601: 1594: 1578: 1574: 1570: 1566: 1562: 1558: 1554: 1550: 1543: 1527: 1523: 1522: 1517: 1511: 1509: 1492: 1488: 1484: 1478: 1462: 1458: 1454: 1450: 1444: 1442: 1425: 1421: 1417: 1411: 1395: 1391: 1387: 1381: 1365: 1361: 1357: 1350: 1334: 1330: 1326: 1322: 1316: 1300: 1296: 1292: 1290: 1281: 1277: 1268: 1265: 1263: 1260: 1259: 1255: 1254:Sharks portal 1249: 1244: 1240: 1230: 1228: 1224: 1220: 1216: 1212: 1208: 1207:mano kihikihi 1204: 1200: 1196: 1192: 1186: 1184: 1180: 1176: 1172: 1171:law and order 1168: 1164: 1160: 1156: 1152: 1142: 1140: 1136: 1132: 1127: 1125: 1121: 1117: 1113: 1107: 1099: 1090: 1088: 1084: 1080: 1076: 1072: 1068: 1064: 1060: 1059: 1054: 1041: 1024: 1022: 1016: 1014: 1009: 1005: 1001: 997: 990: 986: 981: 977: 975: 971: 962: 949: 946: 940: 936: 934: 931: 929: 926: 923: 919: 918: 915: 912: 906: 902: 900: 897: 895: 894:Sphyrna tudes 892: 889: 885: 884: 881: 878: 872: 868: 866: 863: 861: 858: 855: 851: 850: 847: 844: 838: 834: 832: 829: 827: 824: 821: 817: 816: 813: 810: 804: 800: 798: 795: 793: 792:Sphyrna media 790: 787: 783: 782: 779: 776: 770: 766: 764: 761: 759: 756: 753: 749: 748: 745: 742: 736: 732: 730: 727: 725: 722: 719: 715: 714: 711: 708: 702: 698: 696: 693: 691: 688: 685: 681: 680: 677: 674: 671:Not Evaluated 668: 664: 662: 659: 657: 654: 652: 651: 648: 645: 639: 635: 633: 630: 628: 625: 622: 618: 617: 613: 610: 607: 605:Common names 604: 601: 599: 598: 595: 587: 585: 581: 577: 573: 569: 564: 560: 556: 552: 548: 538: 536: 532: 529:fuses with a 528: 524: 520: 516: 513:In 2007, the 511: 509: 506: 502: 498: 494: 490: 486: 482: 478: 477:fertilization 474: 464: 462: 458: 454: 450: 439: 436: 432: 428: 424: 419: 417: 413: 409: 400: 391: 389: 385: 384: 379: 374: 372: 368: 364: 359: 349: 347: 343: 338: 336: 332: 328: 327: 322: 318: 317: 312: 308: 304: 300: 291: 282: 277: 272: 271: 267: 265: 264: 260: 259: 257: 254: 250: 245: 240: 237: 234: 233: 230: 227: 224: 223: 220: 219:Selachimorpha 217: 215:Subdivision: 214: 213: 210: 207: 204: 203: 200: 197: 194: 193: 190: 187: 184: 183: 180: 177: 174: 173: 170: 167: 164: 163: 158: 153: 149: 146: 142: 138: 133: 126: 121: 116: 111: 106: 101: 96: 91: 86: 81: 76: 71: 57: 54: 40: 36: 32: 25: 20: 3945: 3890: 3881: 3872: 3871:Bonnethead ( 3863: 3854: 3845: 3836: 3827: 3818: 3807: 3806: 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Scalloped hammerhead
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Chondrichthyes
Elasmobranchii
Selachimorpha
Carcharhiniformes
Sphyrnidae
T. N. Gill
Genera
Eusphyra
Sphyrna

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