Pectoral fins have dark tips. Images of Sphyrna lewini: Scalloped hammerhead shark pictures. Australian hammerhead shark populations are in decline. Description. It has also been known as Cestracion leeuwenii in 1865, Zygaena erythraea in 1871, Cestracion oceanica in 1913, and Sphyrna diplana in 1941. Diet. Yet thanks to overfishing and shark finning practices this species is now since 2008 on the “globally endangered” species list. Scalloped hammerhead (Sphyrna lewini) – Status: Endangered Like other sharks around the world, they are under threat from bycatch in commercial fisheries as well as shark-finning, the practice of capturing sharks and removing their fins for commercial purposes. They can be observed cruising over reefs and boulder-strewn slopes. The Scalloped Hammerhead Shark has a tapered shape, with light brown, bronze or olive colouring on the dorsal surfaces, fading to white below. Second dorsal fin small and low. The Scalloped Hammerhead sometimes forms large migratory schools, dispersing at night to feed in deeper waters. Finning is a practice, which cuts off the fins of sharks and put them back to ocean. Hammerhead Shark Facts for Kids. There exist seven species. The reproductive cycle for these sharks is about 1 year. The hammerhead sharks are an unmistakable group of sharks that can be distinguished from all other fishes by the shape of their heads. On an average basis, the hammerhead shark ranges from 1m to 6m+, with the largest being the Great Hammerhead. A newly recognized species without widely available photographic evidence, the Carolina hammerhead (Sphyrna gilberti) was named in 2013. Description. Out of nine species, two are listed as endangered (great hammerhead and scalloped hammerhead) and one as vulnerable (golden hammerhead) species. The Scalloped Hammerhead was always the most common Hammerhead Shark around. Scalloped hammerhead shark (Sphyrna lewini) feisty females fight for attention. The heaviest known great hammerhead is a 4.4 m (14 ft) long, 580 kg (1,280 lb) female caught off Boca Grande, Florida in 2006. Hammerhead sharks are most common near Wolf Island and Darwin Islands in the north of the archipelago.Galapagos is one of the last remaining places where large schools of scalloped hammerhead sharks can be observed. Scalloped hammerheads are estimated to have lost up to ~80% of their original population in QLD waters (2). These are connected to the exterior via pores in the shark's snout. The next one is handed. Scalloped hammerheads usually grow to the length of 1.5 to 2.7 meters long, but the longest found was 4.3 meters long. The risk of extinction is higher on many hammerhead sharks because of overfishing in some countries in Asia. ... Fin-tastic facts. Hammerhead Shark Lifespan: These sharks have a lifespan of 20 to 30 years. Like all other hammerhead sharks, the scalloped hammerhead has a "hammer", which is known as the "cephalofoil", on its head.The shark's eyes and nostrils are placed on the ends of the cephalofoil. It is found in tropical and subtropical waters in the eastern Pacific Ocean, from Mexico to Peru, and possibly as far north as the Gulf of California. During the day it swims about in so-called “schools” (groups) of up to 100 animals. The other hammerhead species are the Bonnethead, the Great Hammerhead, the Scalloped hammerhead, Carolina hammerhead, Scoophead shark, Smalleye hammerhead, Smooth hammerhead and the Whitefin hammerhead. Habitat. Hammerhead Shark Facts. A hammerhead shark uses its wide head to trap stingrays by pinning them to the seafloor. Sharks can detect weak electrical fields using electrical sense organs called the ampullae of Lorenzini. First dorsal rear margin almost straight. It was renamed Sphyrna lewini in 1834. Carolina Hammerhead . The scalloped bonnethead (Sphyrna corona) is the smallest species of hammerhead shark, measures up to 92 centimeters (36 inches) long. Free divers can wait patiently until a hammerhead shark approaches. Hammerheads areContinue Reading A scalloped hammerhead shark (Sphyrna lewini) swimming in the Open Sea exhibit. Pelvic fins not falcate. Free rear … The great hammerhead and the smooth hammerhead are the biggest with a length of 20 ft (6.1 m). Hammerhead shark is probably the weirdest type of sharks. However, the females have very thick skin so they aren’t in pain from those bites. Commercial fisheries catch hammerheads for their oil, meat and skin. Endangered Species Act, one of the world’s strongest wildlife conservation laws. Conservation. Scalloped hammerhead sharks are moderately large sharks with a global distribution. There are nine species of hammerhead sharks that inhabit all oceans of the world. The Scalloped Hammerhead was always the most common Hammerhead Shark around. They can be found in the water at the surface down to a depth of approximately 180 m (600ft). Facts about Hammerhead Sharks 8: the risk of extinction. Threats: The scalloped hammerhead is an increasingly targeted species by commercial and illegal fisheries for their fins as these are highly valued in the Asian market for shark fin soup. Scalloped Hammerhead Shark Pictures. The first transmitter is fixed. Hammerhead sharks can be found both in deep and shallow waters. Shark biologists consider that hammerheads have a relatively slow growth rate. A perfect result, it hangs prominently on the back of the shark. The word Sphyrna is a Greek word meaning "hammer". It refers to the shape of the shark's head. In parts of the Atlantic Ocean, their populations have declined by over 95% in the past 30 years. It has a length of about 18 to 20 feet. Hammerhead Shark Pic Facts about Hammerhead Sharks 9: finning. Read … The Scalloped Hammerhead Shark can be distinguished by their large flattened 'hammer-like' head, with wide set eyes and prominent central scallop-like indentation in the front margin of the head. Leading edge of hammer curved with well defined central and lateral indentations (scalloping). Yet thanks to overfishing and shark finning practices this species is now since 2008 on the “globally endangered” species list. Anatomy. The most distinguishing characteristic of this shark is it's "hammer-shaped" head. They are very vulnerable to being caught as bycatch by trawls, purse-seine nets, gillnets and longlines. They are threatened by commercial fishing, mainly for the shark fin trade. Like all other hammerhead sharks, the scalloped hammerhead has a "hammer", which is known as the "cephalofoil", on its head.The shark's eyes and nostrils are placed on the ends of the cephalofoil. The shark's eye placement, on each end of its very wide head, allows it to scan more area more quickly than other sharks can. In parts of the Atlantic Ocean, their populations have declined by over 95% in … The scalloped hammerhead was first known as Zygaena lewini. The largest species is the Great hammerhead. It is a species that looks nearly identical to the scalloped hammerhead, but it has 10 fewer vertebrae. Scalloped hammerheads usually grow to the length of 1.5 to 2.7 meters long, but the longest found was 4.3 meters long. Scalloped hammerhead sharks have became the first species of shark to be protected by the U.S. Hammerhead Shark Facts - Animals of the Ocean. For example, male scalloped hammerheads take between 6 and 9 years to mature (at a length of 1.5 - 2 metres), while male great hammerheads take at least 9 years to mature (at a length of around 2.2 metres). At certain times of the year, scalloped hammerheads swim in schools of several hundred animals — unusual behavior for predators at the top of the food chain. Many species are classed as Hammerhead sharks, they are: Great Hammerhead, Bonnethead, the Scalloped hammerhead, Carolina hammerhead, Scoophead shark, Smalleye hammerhead, Smooth hammerhead, Whitefin hammerhead and the Winghead shark. The wide, hammer-shaped head gives these sharks their common name, and the scalloped hammerhead is named for the notches found along the front edge of its head. At night it goes hunting on its own. The better the shot finds its target, the longer the transmitter will be fixed. Hammerhead sharks, in general, are listed by the International Shark Attack File #8 on its list of species responsible for shark attacks from the years 1580 to 2011. These images of scalloped hammerheads (Sphyrna lewini) are available for commercial reproduction.If you would like more information on licensing fees, please email elasmodiver with as many details about your intended usage as possible including intended print run if applicable. There are 9 known species of Hammerhead sharks that range from 0.9 to 6 metres (3 to 20 … This shark's unusual name comes from the unusual shape of its head, an amazing piece of anatomy built to maximize the fish's ability to find its favorite meal: stingrays. Hammerhead sharks can grow up to a length of 20 feet and weigh around 1,000 pounds. The scalloped bonnethead (Sphyrna corona) is a rare, little-known species of hammerhead shark, and part of the family Sphyrnidae.Its other common names include the mallethead shark and the crown shark. Shrinivas Kanade Feb 12, 2020 ... Only the great hammerhead, the smooth hammerhead and the scalloped hammerhead are aggressive, and may attack a swimmer when provoked. Scalloped Hammerhead Sharks are the most common species of hammerheads in costal regions, even appearing in shallow waters like estuaries and inlets. Hammerhead Shark Hammerhead Shark – Family Sphyrnidae A hammerhead shark is any of the ten species that make up the Sphyrnidae family. Hammerhead sharks are particularly vulnerable to being caught in gillnets (fishing nets) because of the unique shape of their head. Body grey to greyish brown. The scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark, and part of the family Sphyrnidae.Originally known as Zygaena lewini, its genus name was later changed to its current name.The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head. Still, many of the older females do have plenty of bite marks on their bodies from this process. ... (Carolina hammerhead), Sphyrna lewini (Scalloped hammerhead), Sphyrna media (Scoophead), Sphyrna mokarran (Great hammerhead), Sphyrna tiburo (Bonnethead), Sphyrna tudes (Smalleye hammerhead), and Sphyrna zygaena (Smooth hammerhead). The rituals for mating may seem harsh from our point of view as the males fiercely bite the females. Hammerhead sharks, or sphyrnids, are perhaps the most distinctive and unique of all sharks. Hammerhead Shark Reproduction. Hammerhead shark, (family Sphyrnidae), any of 10 shark species belonging to the genera Sphyrna (9 species) and Eusphyrna (1 species), which are characterized by a flattened hammer- or shovel-shaped head, or cephalofoil. View all available Scalloped hammerhead shark images in the Shark Pictures Database Common Names: Scalloped Hammerhead Latin Name: Sphyrna lewini Family: Sphyrnidae Identification: Leading edge of hammer arched with well defined indentations. 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