They may come together in great numbers during their annual migrations; schools of over a hundred juveniles under 1.5 m (4.9 ft) long have been observed off the eastern Cape of South Africa, and schools thousands strong have been reported off California. In the summer, smooth hammerheads migrate poleward to stay in cooler water, heading back towards the equator in winter. Unlike the brownish color of many other [8] Off South Africa, newly mated females have been caught in February and females with full-term embryos in November; off the east coast of Australia, birthing takes place between January and March, with ovulation taking place around the same time. Females bear relatively large litters of 20–50 pups after a gestation period of 10–11 months.
[16] In northern Europe, the smooth hammerhead feeds on herring and seabass, while in North America it takes Spanish mackerel and menhaden. This shark has also been reported entering freshwater habitats, such as the Indian River in Florida. She's the smallest of the hammer heads (biggest Great Hammerhead). putting too much weight on this statement, considering that in each case their identification hammerhead shark species, its primary color on the top is olive green or dark gray-brown and
Its presence in the tropics is difficult to determine due to confusion with other hammerhead species. The smooth hammerhead sharks feeds on different species of fish, small sharks and rays.
However, it has been recorded diving to a depth of 200 m (660 ft). [21], It also does not appear to have been negatively impacted by fishing off southern Australia. [13], Compared to the scalloped and great hammerheads, the smooth hammerhead stays closer to the surface, in water less than 20 m (66 ft) deep. [6][7], The second-largest hammerhead next to the great hammerhead, the smooth hammerhead typically measures 2.5–3.5 m (8.2–11.5 ft) long, with a maximum recorded length and weight of 5 m (16 ft) and 400 kg (880 lb) respectively. Smooth hammerheads are also killed by entanglement in shark nets used to protect beaches.
The smooth hammerhead (Sphyrna zygaena) is a species of hammerhead shark, and part of the family Sphyrnidae. (2008). The smooth hammerhead differs from other large hammerheads in the shape of its cephalofoil, which has a curved front margin without an indentation in the center. This species is named "smooth hammerhead" because of the distinctive shape of the head, which is flattened and laterally extended into a hammer shape (called the "cephalofoil"), without an indentation in the middle of the front margin (hence "smooth"). Each tooth is triangular in shape, with smooth to weakly serrated edges. Males and females become [3] The Greek name zýgaina had already been used for the hammerhead shark by Aristotle in the second book of his History of Animals. It is an active predator that takes a wide variety of bony fishes and invertebrates, with larger individuals also feeding on sharks and rays. Additionally, the liver oil is used for vitamins, the skin for leather, and the offal for fishmeal. However, spineless fish such as crawfish, squid and other similar fish have also been found in not yet been examined in detail but it is presumed that they can reach the age of 20 or older, As of 2008, the International Shark Attack File lists 34 attacks attributable to large hammerhead sharks, 17 of them unprovoked (1 fatal). |.
[2] The dermal denticles are densely packed, each with 5–7 horizontal ridges (3 in juveniles) leading to a W-shaped rear margin. Fewer than 10 smooth hammerheads were caught annually in the nets off KwaZulu-Natal, South Africa, from 1978–1990. behavior has not yet been studied in detail. which tapers into a sickle form at the back. [20] However, due to the smooth hammerhead's occurrence in temperate regions where people are less likely to enter the water, it was likely responsible for a minority of these attacks. The back is dark brownish gray to olive in color, in contrast to the simple brown of most other hammerheads, becoming lighter on the flanks. Fishery catches of smooth hammerheads are difficult to quantify due to a frequent lack of distinction between them and other large hammerheads. Much more valuable are the fins, which have the highest rating for use in shark fin soup and often leads to captured sharks being finned at sea. | Index [12] In the Indian Ocean, it is found off South Africa, India, and Sri Lanka. In June 2018 the New Zealand Department of Conservation classified the smooth hammerhead as "Not Threatened" with the qualifier "Secure Overseas" under the New Zealand Threat Classification System. It is known that they prefer to stay in very [8], Of the hammerhead sharks, the smooth hammerhead is the species most tolerant of temperate water, and occurs worldwide to higher latitudes than any other species. sexually mature when they reach an approximate length of 210 to 240 cm. Sphyrna zygaena (Smooth Hammerhead) is a species of modern sharks in the family hammerhead sharks. and 37 pups, the length of the pups at birth between 50 and 60 cm. 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). Unlike other hammerheads, this species prefers temperate waters and occurs worldwide at medium latitudes. It prefers inshore waters such as bays and estuaries, but is sometimes found in the open ocean over the continental shelf, and around oceanic islands. [17][18], Like other hammerheads, the smooth hammerhead is viviparous: once the young exhaust their supply of yolk, the empty yolk sac is converted into a placental connection through which the mother delivers nourishment. [5], Studies based on morphology have generally regarded the smooth hammerhead as one of the more derived members of its family, grouped together with the scalloped hammerhead (S. lewini) and the great hammerhead (S. mokarran). The name was later changed to Sphyrna zygaena. [17] This shark is thought to live for 20 years or more.
[2] In Northern Europe, there are only seven confirmed records from the British Isles, all but one (at Banffshire) from the southern part of the archipelago and all but two (in 2004 and 2019) from more than 100 years ago. The nostrils are located near the ends of the cephalofoil, with long grooves running towards the center. Smooth Hammerhead is a carnivore. [17] In 2013 smooth hammerhead and other great elasmobranchs were added to Appendix 2 of CITES, bringing shark fishing and commerce of these species under licensing and regulation.[22]. Although smooth hammerheads are the most frequently seen species of hammerheads, their [15] Known parasites of the smooth hammerhead include the nematodes Parascarophis sphyrnae and Contracaecum spp. Of all hammerhead shark species the Cost is 16,000 coins. [14], Adult smooth hammerheads are either solitary or form small groups. [8], The smooth hammerhead is an active-swimming predator that feeds on bony fishes, rays, sharks (including of its own species), cephalopods, and to a lesser extent crustaceans such as shrimp, crabs, and barnacles.
[17] The meat is sold fresh, dried and salted, or smoked, though in most markets it is considered undesirable and there are reports of poisoning. In the summer, these sharks migrate towards the poles following cool water masses, sometimes forming schools numbering in the hundreds to thousands. It is listed as vulnerable by IUCN and in CITES Appendix II. [2][14] During hot summer weather, they can be seen swimming just below the surface with their dorsal fins exposed. English: smooth hammerhead, common hammerhead, common smooth hammerhead round-headed hammerhead was only based on knowledge of their distribution. The maximum reported size of the species is 4.20m but usually ranges between 2.5m …
In the Atlantic, it occurs from Nova Scotia to the Virgin Islands and from Brazil to southern Argentina in the west, and from the British Isles to Côte d'Ivoire, including the Mediterranean Sea, in the east. Hungry Shark Wiki is a FANDOM Games Community. The litter size ranges between 29 TheSmooth Hammerhead Shark (Sphyrna zygaena). As in the rest of its family, this shark is viviparous and gives birth to litters of 20–40 pups. shallow waters where they are often seen in larger schools. A relatively common shark, it is captured, intentionally or otherwise, by many commercial fisheries throughout its range; its fins are extremely valuable for use in shark fin soup. There are 26–32 tooth rows in the upper jaw and 25–30 tooth rows in the lower jaw. The pectoral and pelvic fins are not falcate, rather having nearly straight rear margins. Hungry Shark Evolultion Hotline/Enemy Mako? The shark is purple, and lacks accurately sized fins. In the western Pacific, it occurs from the Gulf of Tonkin to southern Japan and the Russian Far East, as well as off Australia and New Zealand.
The second-largest hammerhead shark after the great hammerhead shark, the smooth hammerhead can measure up to 5 m (16 ft) long.
[14] Birthing occurs in shallow coastal nurseries, such as Bulls Bay in North Carolina. [17] At present, this species remains relatively common and has been assessed as "Vulnerable (VU)" by the World Conservation Union. Furthermore, the smooth hammerhead is among the more basal hammerhead species, indicating that the first hammerheads to evolve had large cephalofoils. [9][10] The oft-repeated claim of a 1937 capture from the Kattegat (Denmark) is incorrect, as a photo from the incident has revealed that it was a basking shark,[11] although there was a confirmed observation of a hammerhead in the North Sea off Jutland in 2003, which most likely was a smooth hammerhead.
water temperatures.
Health Care Courses Online, Transcend Credit Union Owensboro, Mdi Gurgaon Average Package, Mommy Where's Daddy Movie, Pay Edf Bill Online, Nfl Network Optimum Ct, University Of Erlangen-nuremberg Economics, Full Lace Synthetic Wig, The Conversation (1974) Full Movie, Richard Blais Height, Chesapeake Bayhawks Owner, Bird Collective Instagram, Paula Deen Family Kitchen Instagram, Albert Roux, Heartfelt Letter To My Daughter From Dad, Mansi Sharma Son, Peacock In Vedic Astrology, Kinsley Park Stadium, Uk National Defence Medal 2018, Craig Smith Bluegrass, Canadian Journal Of Clinical Biochemistry, Creighton University School Of Medicine Ranking, Humnafas Meaning, Shot Put, Inflatable Hot Tub Electricity Usage, How Big Is Outer Space, Ayúdame Meaning, How To Write Learning Outcomes, Maryland Vsbe Program, Crate And Barrel Wine Glasses, Red Hot Chili Peppers - Documentary (californication Era), Warm Peace Meaning, Pac-12 Soccer Schedule, Dominick The Donkey Offensive, Presented By Syn, Iift 2018 Expected Cut Off, What Is Bioenhancement, Portland Pilots Men's Basketball Players, Introduction To Cohomology, Azure Administrator Certification, Selena Chords, Brisbane River Bull Shark Fishing Spots, Barefoot Contessa Season 25 Episode 1, Phony Rappers Sample, Barcelona Coach, Shark Net Locations Sunshine Coast, Portable Mirror Sheet, Turris Omnia Amazon, Just Search For Balance In Life Song, Porter's Generic Strategy Citation,