However, since they reproduce once a year, hammerheads can replenish their populations faster than other species of shark can. The scalloped bonnethead (Sphyrna corona) or mallethead shark is a small … In 1950, Enrico Tortonese determined that the specimens illustrated by Valenciennes were in fact smalleye hammerheads, to which the name S. tudes then applied. As the next … GENERAL DESCRIPTION. It can grow up to 20 feet in length and weigh up to 1,000 pounds, although smaller sizes are more common. Hammerheads prefer to hunt in shallow waters, and some species even venture into bays and brackish waters to find prey. The head is indented at the center of the "hammer," which is almost rectangular in shape. These sharks have flat, T-shaped heads that make them stand out from other sharks. There are 9 known species of Hammerhead sharks that range from 0.9 to 6 metres (3 to 20 feet) in length. The hammerhead shark family has increased detection abilities because their sensory organs are spread throughout their heads. Species Codes for Trip Ticket Reporting: Marine Life Code: 656 - Shark, other. Although there are nine different species of hammerhead shark in the world, the great hammerhead is the biggest. Sphyrna mokarran. 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. Shark finning is when sharks are harvested for their fins and then tossed back to sea, often while still alive. Only one species of shark, the great hammerhead shark, is big enough to pose a real threat to an adult human. © 1996-2015 National Geographic Society, © 2015- Species: Great Hammerhead Scientific Name: Sphyrna mokarran Date Tagged: May 30, 2014 Location Tagged: Biscayne Bay Gender: Male Total Length (TL): est. The unique head of these sharks serves purposes beyond great vision. Facts about many sharks from the eight orders of sharks from the Shark Research Institute (SRI). The Story Behind the Name: Narragansett Brewing Company became permanently tied to … About Quint. Their wide-set eyes give them a better visual range than most other sharks. Hammerhead sharks are best known for their long, rectangular heads. Hammerhead sharks are consummate predators that use their oddly shaped heads to improve their ability to find prey. Shields, J. The head is indented at the center of the "hammer," which is almost rectangular in shape. International Journal for Parasitology, 15/6: 635-643. These sharks migrate when the seasons change; they move to the poles during the summer and to the equator during the winter. COMING SOON - WITH THE OPENING OF SHARKS! 1989. English: scalloped hammerhead, bronze hammerhead shark, hammerhead, hammerhead shark, kidney-headed shark, scalloped hammerhead shark, and southern hammerhead shark Scientific Name: Sphyrna mokarran The great hammerhead shark has a wide, thick head with the eyes at the margins. Sphyrna includes the nine species of true hammerheads, and Eusphyrna includes only one species, the winghead shark. Stevens, J., J. Lyle. Fully grown, it … There are dense populations off the coasts of Africa, as well as in Costa Rica and Hawaii. Hammerhead sharks live in warm coastal waters. They are dark olive in color with a pale underside. A particular favorite of hammerheads is stingrays. The great hammerhead was first described as Zygaena mokarran in 1837 by the German naturalist Eduard Rüppell. Populations of these sharks are dense around Hawaii, Costa Rica, and Eastern and Southern Africa. The great hammerhead was first described as Zygaena mokarran in 1837 by the German naturalist Eduard Rüppell. The family scientific name for hammerhead sharks, Sphyra, is the Greek word for “hammer.”. The name Sphyrnatranslates from Greek to the English language “hammer”, referring to the hammer-shaped head of this species. Hammerhead sharks, or sphyrnids, are perhaps the most distinctive and unique of all sharks. Populations of most species of hammerhead sharks have been in decline, with some species listed as threatened while others are critically endangered. The hammerhead's increased ampullae sensitivity allows it to find its favorite meal, stingrays, which usually bury themselves under the sand. Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. 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. Giant hammerhead, Great hammerhead, Squat-headed hammerhead shark. This process can take hours until the female decides to submit to a mate. The scientific name of the great white shark literally means “sharp or jagged tooth.” When you see pictures of large great whites, it is easy to see how they got their name. SRI conducts and sponsors rigorous, peer-reviewed field research about sharks and uses science-based information to educate and advocate for shark conservation policies and protections by the world’s gov The great hammerhead is the largest of the nine identified species of this shark. Common Name(s): cornuda gigante [Spanish] great hammerhead [English] cornuda de ley [Spanish] Taxonomic Status: Current Standing: valid Data Quality Indicators: Record Credibility Rating: verified - … Scientific Name. These organs aid in locating and catching prey. By night, most species are solitary hunters. Most hammerhead species are fairly small and are considered harmless to humans. The great hammerhead shark has a wide, thick head with the eyes at the margins. It is the largest of nine species of hammerhead sharks and … They have tall, pointed dorsal fins. They prefer warm bodies of water and are only found in the ocean. Photograph by Craig O'Connell, Nat Geo Image Collection, WATCH: World's Deadliest—Hammerhead Sharks, https://www.nationalgeographic.com/animals/fish/group/hammerhead-sharks.html. And by spreading their highly specialized sensory organs over their wide, mallet-shaped head, they can more thoroughly scan the ocean for food. The name was later changed to the current Sphyrna mokarran. 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. Their teeth are serrated and tiny. If the sharks are unable to find food, they have been known to eat their own young. This shark's distinctive head is designed for greater agility and panoramic vision, making the hammerhead a hunter to be reckoned with. Hammerheads tend to be carnivorous creatures. Many people are highly intrigued and curious about the shape and benefits of the Hammerhead Shark’s head. Some species weigh as little as 300lbs, while others weigh nearly 1000lbs. Scientific name: Sphyrnidae (Sphyrna mokarran – Great Hammerhead) Conservation Status: Endangered. Most sharks are slow to breed and reproduce, so their numbers simply cannot keep up with the population decline caused by shark finning. Humans are the biggest threat to these species, as they are fished deliberately for their fins or occasionally accidentally caught in fishing nets. HAMMERHEAD SHARK FACTS. These sharks are well known for their long, rectangular heads with an eye at each end. It can grow up to 20 feet in length and weigh up to 1,000 pounds, although smaller sizes are more common. 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