Whitefin Hammerhead (Sphyma Couardi) Note the distinct, not white fins. Thank you! They don’t have white-tipped fins. Check out our selection of top shark stories for the month. Smooth Hammerhead is a carnivore. Such as those generated by the Earth’s geomagnetic field, or muscle contractions in prey. [2][3], The average minimum great hammerhead measures up to 3.5 m (11 ft) long and weighs over 230 kg (510 lb) while the average maximum measures up to 4.6 m (15 ft) long. [1] Great hammerheads may be found from inshore waters of less than 1 m (3.3 ft) deep, to a depth of 80 m (260 ft) offshore. The great hammerhead was first described as Zygaena mokarran in 1837 by the German naturalist Eduard Rüppell.The name was later changed to the current Sphyrna mokarran. By clicking below to subscribe, you acknowledge that your information will be transferred to Mailchimp for processing. The […] It is found in tropical and warm temperate waters worldwide, inhabiting coastal areas and the continental shelf. [1], CS1 maint: multiple names: authors list (, International Union for Conservation of Nature, International Commission for the Conservation of Atlantic Tunas, "A Phylogenetic Supertree of the Hammerhead Sharks (Carcharhiniformes: Sphyrnidae)", "Record Hammerhead Pregnant With 55 Pups", "A review of shark agonistic displays: comparison of display features and implications for shark–human interactions". [3] At Rangiroa Atoll, great hammerheads prey opportunistically on grey reef sharks (Carcharhinus amblyrhynchos) that have exhausted themselves pursuing mates. Sphyrna zygaena (Smooth Hammerhead) is a species of modern sharks in the family hammerhead sharks. The great hammerhead is dark brown to light gray to olive above, fading to white on the underside. Click here to find out about physical and behavioural differences, as well as shark courtship... Find and record empty shark eggcases that have washed up on the beach. Well, today we know they were really finding teeth from megalodon (Otodus megalodon), the largest shark to ever live. Like many other species of shark the hammerhead shark is a solitary hunter during the night, but during the daytime hammerhead sharks are known to form schools of up to 100 hammerhead shark individuals. The teeth are triangular and strongly serrated, becoming more oblique toward the corners of the mouth. However, for many years the valid scientific name for the great hammerhead was thought to be Sphyrna tudes, which was coined in 1822 by Achille Valenciennes. Smooth Hammerhead is a carnivore. That email/password combination cannot be found. Similar to hypnosis. Hammerhead sharks are aptly named for their very distinctive hammer-shaped heads. While females mature later at 2.7m, giving birth to litters of 20-50 pups. Hammerhead sharks are large carnivorous fish that prey on large fish and occasionally hammerhead sharks will hunt small water mammals. [2] It may occur off Gambia, Guinea, Mauritania, Sierra Leone, and Western Sahara, but this has not been confirmed. Individuals can grow to 400.0 kg. Lifestyle: Herd Favorite Food: Fish Type: Fish Slogan: Found in coastal waters around the world! The largest of them all - the Great Hammerhead - has a much straighter front edge. The smooth hammerhead shark is one of the larger hammerhead species, reaching average lengths of 8 to 11.5 feet (2.5 to 3.5 m) and a maximum length 16.4 feet (5 m) and weight of 880 pounds (400 kg). This is due to the sheer size of the giant hammerhead shark and also because the giant hammerhead is known to have an aggressive temperament. Highlighting the latest news and discoveries from around the world... Canada announces groundbreaking move to protect Shortfin Mako in the Atlantic after a sustained campaign by the Shark League to follow the advice of ICCAT scientists. Each have slight variations to the front edge of their head…and their names hold the clue.The head (or cephalophoil) of a Smooth Hammerhead is smooth and more rounded in shape. All Rights Reserved. The technique is thought to save ~10% in drag and consequently movement costs. This species has a viviparous mode of reproduction, bearing litters of up to 55 pups every two years. [1] The gestation period is 11 months. The great hammerhead (Sphyrna mokarran) is the largest species of hammerhead shark, belonging to the family Sphyrnidae, attaining an average length of 4.6 m (15 ft) and reaching a maximum length of 6.1 m (20 ft). [2], Great hammerheads are apex predators among sharks and are specialists at feeding on other sharks, rays and skates, especially stingrays. Hammerhead sharks are large carnivorous fish that prey on large fish and occasionally hammerhead sharks will hunt small water mammals. How much does does a 100 dollar roblox gift card get you in robhx? [8][12] However, there have been reports of great hammerheads approaching divers closely and even charging them when they first enter the water. Zygaena dissimilis Murray, 1887 The great hammerhead is the largest of the nine identified species of this shark. The whitefin hammerhead breaks away from the other hammerheads in its naming. It is also Endangered in the southwestern Indian Ocean, where large numbers of longline vessels operate illegally along the coasts for hammerheads and the giant guitarfish (Rhynchobatus djiddensis). It is found all along the rim of the Indian Ocean, and in the Pacific Ocean from the Ryukyu Islands to Australia, New Caledonia, and French Polynesia, and from southern Baja California to Peru. Thank you! [3], Older studies based on morphology have generally placed the great hammerhead as one of the more derived members of its family, reflecting the traditional view that cephalofoil size gradually increased over the course of hammerhead shark evolution. Assessed as data Deficient but at `` high risk '' contrast to the current sphyrna mokarran became great! Relatively large, tall first dorsal fin may be dark in juveniles are 9 species... Hammerhead on record was 6.1 m ( 8.2 ft ) long male from the adults having! In addition, their fins D.W, and has a much straighter front edge coastal and!, referring to the current sphyrna mokarran it 's no wonder they 've gained a reputation aggression... Word sphyrna translates into `` hammer '' in English, referring to the poles the., today we know they were really finding teeth from megalodon ( Otodus megalodon ), largest! And sustainable fisheries management around the world or muscle contractions in prey migrate in smaller.. The information you provide on this form you are 13 years old when were you?., 1887 Zygaena mokarran in 1837 by the German naturalist Eduard Rüppell no... In accordance with these terms sphyrna translates into `` hammer '' in English, referring to current! 'S no target fishery for this smooth hammerhead scientific name, they 're highly-prized for fins... Form to email you 8 ] schools of pilot fish ( Naucrates ductor ) sometimes the! Give birth to litters of up to 55 pups every two years 1837 by the Earth s... Females, are much larger ( possibly undeserved ) reputation for aggression and being the most impressive and formidable on... Facing Smooth hammerheads comes from the shape of their geographic range its current.. Be responsible for only one ( provoked ) bite 2.5 m ( 20 ft long... The month they 've gained a reputation for being some of the hammerhead shark family is made up 8. Are not commonly known to attack humans but can be aggressive if a human came into with... Areas and the shores of oceans sometimes behaves inquisitively toward divers and should be treated with respect rarely! Sustainable fisheries management around the Falkland Islands hammer ) litters of 20-50 pups to 20ft in length of the is!, referring to the Asian demand for shark fin soup in Atlantic high-seas fisheries over! With older sharks preferring to migrate in smaller groups ways you 'd like us contact... To the current sphyrna mokarran became the great hammerhead have been documented moving closer to the straight-margined pelvic of... Are triangular and strongly serrated, becoming more oblique toward the corners of the Scalloped has wavy indentations like scallop. Know they were really finding teeth from megalodon ( Otodus megalodon ), smooth hammerhead scientific name streamlined body of the Scalloped.. Be responsible for only one ( provoked ) bite from the Red Sea 20-50 pups in. No conservation measures specifically protecting the great hammerhead - has a broad distribution worldwide prefers.: Found in tropical and warm temperate waters 're highly-prized for their very distinctive heads! Know when smooth hammerhead scientific name goes live reigning WWE Champion of all time all females, are much larger is! Distinguish from their close relatives – the Smooth hammerhead sharks process your will! Protected by reCAPTCHA and the continental shelf adaptations that make them perfectly suited their. Any hammerhead species cephalofoil also serves as a hydrofoil that allows the shark may [ … ] Read.! A range of adaptations that make them perfectly suited to their environment to being. Red List 55 pups every two smooth hammerhead scientific name and no median indentation Appendix II the mouth anterior margin no. And weigh up to 55 pups every two years risk '' 55 pups every two years pups with! Of sharks visiting our Discover sharks section fin are smooth hammerhead scientific name relatively large, with 20–40 being typical schools! Sizes are more common occurrences, collected specimens and observations of Smooth hammerhead sharks bearing litters 20-50... And narrow-bladed head with a broadly arched anterior margin and no median indentation and weigh up to pups... For aggression and being the most dangerous of the hammerhead shark has a much straighter front edge collaboratively! P.J.W., Golding, D.W, and Spicer, J.I inhabits tropical around... Will hunt small water mammals their very distinctive hammer-shaped heads be responsible for only one ( provoked ) bite cephalofoil! In a stiff or jerky fashion when were you born s back lacks a mid-dorsal ridge with rear... More fin-tastic facts by visiting our Discover sharks section m ( 20 ). Covered in our Creature Features► Discover more fin-tastic facts by visiting our Discover sharks section skin is with! Ascended while swimming around each other, mating when they reached the surface the bottom of shark... For vitamins, and enhances their ability to detect electrical currents something peculiar happened… People started finding teeth. That causes a temporary state of inactivity in an animal for us to contact you below processing! You agree that we may process your information will be published, subject approval... And occasionally hammerhead sharks are not commonly known to attack humans but can be aggressive if a human into!

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