They can reach 3 to 20 feet in length and up to 1000 pounds in weight. Probably the most recognizable is the first dorsal fin; it typically acts like a sailboat keel, helping the shark stay balanced while it swims. Learn more about these interesting creatures below. "These sharks increased the melanin content in their skin by 14 percent over 21 days, and up to 28 percent over 215 days.” Despite all the tanning they’d done, there wasn’t a trace of skin cancer on any of the test sharks. That means hammerheads have superior depth perception when compared to other sharks. Great hammerhead sharks have a very wide head with an eye at either end. Hammerhead shark facts for kids are coming in our education group of facts for kids to learn more about the world and the whole universe. Interesting facts about hammerhead sharks. Some schools are exclusively made up of females while others contain sharks of both sexes and different ages. There are 10 species of hammerhead shark. The cephalofoil laterally project outwards, thus giving the shark the hammerhead shape, and as a sensory or… Stingrays are widely hunted as a favorite food. There are 9 species of hammerhead sharks, ranging in size from about 3 feet (0.9 m) long to over 20 feet (6 m). The reproductive process is still quite a mystery in the scientific communities. Their heads help improve movement and hunting ability. And yet not all hammerheads look alike. Researchers noticed that when young scalloped hammerheads are kept in shallow outdoor pools, their skin darkened, going from a light beige to a rich chocolate brown. Hammerhead shark species can be as short as 3 feet and as long as 19.7 feet. This unique eye placement allows them a 360 degree vertical view, which gives them a unique advantage against approaching predators and prey by allowing them to see what is above and below them simultaneously. Hammerhead Shark Frenzy. Divers have little trouble recognizing a hammerhead when they see one. Hammerhead sharks are some of the strangest looking animals on this Earth. The shark's eye placement, on each end … The gestation period for a female shark is about 11 months, and 6-42 pups are born live. And that has a big effect on how these animals move. They are typically olive, bronze or light brown in color with a white belly, and on average reach a length of 13 feet. Both of them are often hunted by human beings due to the expensive … They have disproportionately small mouths and seem to do a lot of bottom-hunting. According to the researchers, these were probably large-bodied animals. The great and the scalloped hammerheads are listed on the World Conservation Union’s (IUCN) 2008 Red List as endangered, whereas the smalleye hammerhead is listed as vulnerable. It is a rare, little-known species of hammerhead shark. Like all sharks, hammerheads have electroreceptory sensory pores called ampullae of Lorenzini, which enable them to detect electric fields, including the weak electrical impulses generated by prey, which helps them to hunt. Some scientists have theorized that the hammer-like shape of the head may have evolved to enhance the shark’s vision. About Hammerhead Sharks The unique ‘hammer’ shaped head helps the shark zone in on prey by detecting the direction of a scent, and enabling it to see prey both above and below at the same time. They can range in weight from 3 to 550 kg. Interesting Hammerhead shark Facts: Size of the hammerhead shark depends on the species. It is not known why they group, but apparently, the practice provides them protection against larger predators. Experts have identified 10 living shark species in the hammerhead family (although it’s possible that even more exist). Though many sharks are solitary creatures, scalloped hammerheads—which can reach lengths of 10 to 12 feet and can weigh in at 300 pounds or more—form schools. An international team of scientists surprised the world by reporting that female hammerhead sharks can reproduce without males through parthenogenesis, or “virgin birth”. Watch Shark Superhighway, a PG-rated National Geographic documentary about hammerhead shark conservation. Since sharks do not have mineralized bones and rarely fossilize, their teeth alone are commonly found as fossils. The hammerhead family ranges from dark brown to grey on their dorsal side and have a grey or white belly, sometimes even olive in colour which performs as a sort of camouflage while hunting. Scalloped hammerhead Scientific classification Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Order: Carcharhiniformes Family: Sphyrnidae T. N. Gill, 1872 The hammerhead sharks are a group of sharks that form the family Sphyrnidae, so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a "hammer" shape called a cephalofoil. Costa Rica Hammerhead Sharks - 7 facts you may not know about this magnificent shark found in large numbers around Costa Rica Isla del Cocos FUN FACT The scientific genus name of most hammerhead sharks is Sphyrna, which comes from the Greek word for hammer. These sharks' broad, flat, hammer-shaped heads are called cephalofoils, and no other creature in the world has a head quite like it. And in a 2017 experiment, captive bonnetheads were fed a 90 percent seagrass diet. The hammerhead sharks are a group of sharks so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a “hammer” shape. Then, with a bite to the pectoral fin (or “wing”), the prey is immobilized. Hammerhead sharks are the 9 extant species of sharks belonging to Sphyrnidae family, typically characterized by a flattened head resembling a hammer. Studies are currently ongoing to learn more about this amazing animal. Find the answers to all your burning questions about hammerhead sharks with simple facts about these weird-looking animals. Relative to its body size, the winghead shark has the widest head of any hammerhead—almost half as wide as its body is long. Interesting Hammerhead shark Facts: Size of the hammerhead shark depends on the species. Hammerhead sharks are widely distributed in tropical and temperate marine waters near the coasts and above the continental shelves. At night time though they go to find food and they do that on their own. A feces analysis showed that the sharks were digesting half of the grass they’d been eating; enzymes designed to break down plant matter are present in the bonnethead’s digestive tract. They may migrate seasonally, moving equatorward during the winter and poleward during the summer. Hammerhead sharks August 6, 2017 August 5, 2017 admintag It is not a secret for anyone that the sharks are the most dangerous inhabitants of the seas and oceans. As McComb told National Geographic, “[There have] actually been anecdotal claims by divers that they see little fish schooling right in front of the hammerheads’ heads. A 2016 tagging study attached GoPro cameras to five great hammerheads that were living out in the wild. In years with warm El Niño conditions, hammerhead sharks may range many hundreds of kilometres farther than normal. In the majority of sharks, the pectoral fins are longer than the first dorsal—but for great hammerheads, the opposite is true. The gestation period for a female shark is about 11 months, and 6-42 pups are born live. They are typically olive, bronze or light brown in color with a white belly, and on average reach a length of 13 feet. The scalloped hammerhead isn’t the only species which creates schools: The smooth hammerhead (Sphyrna zygaena) also travels in groups. Facts about hammerhead sharks August 6, 2017 August 5, 2017 admintag Among all the inhabitants of the sea who attack a person, the most terrible is a shark. Their panoramic view of the undersea world is inhibited by two blind spots, one in front of the snout and the other directly behind the head. The pups are about 2 feet long at birth. Hammerheads are usually gray-brown to olive-green on top. This reduces drag while also increasing the animal’s “wingspan.” Both factors enable the shark to swim more efficiently. Hammerhead sharks have white bellies and olive green or grey-brownish back. Hammerhead sharks have never been involved in a fatal incident. These partly blocked ultraviolet light, leaving the skin under the filter paler than the skin that had been exposed to the sun. While being monitored, the sharks spent 90 percent of their swimming time tilted to one side—usually at an angle of 50 to 75 degrees. Hammerheads also vary in terms of overall size: The smaller species max out at 3 to 5 feet in length, while the biggest is the great hammerhead (Sphyrna mokarran), which can be up to 18 feet long and weigh over 1000 pounds (with 10 to 13 feet and 500 pounds being closer to average). Previous to scientific research, it was thought that the cephalofoils were used to enhance poor vision in the shark but studies have shown that not only do the … It can be as short as 3 feet and as long as 20 feet which depends on gender, age, and species. Facts about Hammerhead Sharks 4: the bottom of the ocean Hammerhead sharks will stalk their prey by spending the time at the ocean bottom. In adults-only groups, the fish tend to disperse at night before meeting back up during the day. DIET AND FEEDING HABITS The great hammerhead is a fierce predator with a good sense of smell that helps it find its prey. Your email address will not be published. Hammerhead sharks are carnivorous and eat a variety of fish, although stingrays are the preferred prey. Once the baby sharks are born, they are not taken care of by the parents in any way. The cephalofoil has a gentle curve in juvenile sharks but becomes straight as the shark ages. It was previously believed that sharks reproduced only sexually. The hammerhead sharks are a group of sharks so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a “hammer” shape. Researchers from Ireland and the United States performed genetic tests on a baby hammerhead born in an Omaha, Nebraska aquarium in 2001. Hammerhead sharks take advantage of their wide, flat heads to pin down stingrays and other bottom dwelling fish before delivering a fatal bite. But testing confirmed that Omaha's baby bonnethead had no paternal DNA; the mother had reproduced by fertilizing her own egg cells, a phenomenon known as parthenogenesis. Great hammerhead sharks have a notch in the center of their head, which is known as a cephalofoil. Hammerhead Shark Facts for Kids: Want to Interesting facts about hammerhead sharks?.. Hammerhead sharks are also threatened by culling through lethal shark control programs. The “Hammer” Head – The uniquely shaped head that all hammerhead sharks share is called a cephalofoil. Hammerhead Sharks are Viviparous, which means pups grow inside the female shark, similar to humans. The largest species is … Hammerhead sharks can be found in warm waters worldwide. On average, the length of hammerhead sharks ranges from 3 to 19.7 feet; the smallest of this family weighs 6.6 pounds while the biggest ever seen weighed 1,278.7 pounds. It hunts crabs and shrimp—and sometimes it also ingests seagrass. The great hammerhead (Sphyrna mokarran) is the largest species of hammerhead shark. Believe it or not, the hammerhead has the ability to sport a nice tan! Not only does the hammer at as an organ of balance, but its body seems to be specifically designed to twist and bend. During the summer, hammerheads participate in a mass migration to search for cooler waters. There are nine different species of hammerhead shark, and each has its own unique traits and adaptations. Your email address will not be published. They are one of rare marine animals that can get nice tan. They can reach 3 to 20 feet in length and up to 1000 pounds in weight. Wingheads live in the Indo-Pacific, where their oddly-shaped heads make them prone to getting tangled up in fishing nets. At first, it seemed likely that the mother must have been storing sperm; females of many animal species can keep semen alive for years before using it to fertilize eggs. Hammerhead shark species can weigh as little as 6.6 pounds and as much as 1,300 pounds. The molecular evidence suggested that the hammerheads started to diversify around 20 million years ago. They hunt down the prey using the unique head. There are 10 species of hammerhead shark. It’s a myth that sharks don’t get cancer, but young scalloped hammerheads appear to develop cancer-free suntans. Unfortunately, that advantage comes at a cost: Since their eyes are so far apart, hammerheads suffer from a large blind spot at the tip of their snouts. Sharks also have a pair of pectoral fins, located on either side of the body just behind the head, which most species use to steer and generate lift. Mouth of hammerhead sharks is located on the underside of the head. Hammerhead Sharks are believed to be swimming the earths oceans for 20 million years? The status given to these sharks is as a result of overfishing and demand for their fins, an expensive delicacy. According to DNA studies, the ancestor of the hammerheads probably lived in the Miocene epoch about 20 million years ago. The hammerhead with its strangely shaped head is somewhat of a mystery although scientists have recently discovered that the odd shape improves their … These baby sharks huddle together and swim toward warmer water until they are old enough and large enough to survive on their own. Hammerhead sharks are carnivores. Hammerhead sharks’ eyes are on the sides of their heads, so they have nearly a 360-degree sightline. Interesting facts about hammerhead sharks. It is used as a weapon. Make your own origami shark with a piece of paper and a few simple folds. Hammerheads are mostly found throughout the world in warm waters. These sharks are further classified into two genera - genus Sphyrna (with 8 species to its credit) and genus Eusphyra (with the winghead shark as the lone species). They feed on fish, smaller sharks, squid, octopus, crabs, and lobsters . But the shark doesn't always escape unscathed: Great hammerheads are often found with stingray barbs on their faces. Hammerheads, like all other sharks, have sensory organs that can detect the electric fields of prey in the water; some scientists hypothesize that the broad cephalofoils allow hammerheads to have more of these organs—therefore allowing them to better sense prey. The Great Hammerhead shark weighs around 1,000 pounds. Rather than waste away, the sharks gained weight. This color balance enables the sharks to perfectly blend with the ocean since a prey viewing from the bottom will not see it sneaking in for a meal. Hammerhead Sharks Behavior Female sharks give birth to litters of 30 or so pups, and there is a gestation period of approximately ten months. They live in warm coastal waters in the Atlantic, Pacific, and Indian Oceans. Hammerhead sharks can be found in warm waters worldwide. Their bellies are white which allows them to blend into the ocean when viewed from the bottom and sneak up on their prey. 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. Head Why’d they do this? In 2009, biologist Michelle McComb and her team captured live bonnetheads, winghead sharks, and scalloped hammerheads to test their vision. Great hammerhead sharks are viviparous (give birth to live young). Here are some facts about Hammerhead sharks. One survey compared the gut contents of numerous wild bonnetheads and found that up to 62 percent of all the organic matter discovered in their stomachs was seagrass. The Scalloped Hammerhead Shark is another species in our journey through facts about Hammerhead sharks, and is one of the most commonly found species in coastal regions. While most species of sharks are loners, the Hammerhead Sharks swim in schools during the daylight hours. Although sharks have a reputation as destructive beasts that attack almost anything that enters their water habitat, the actual number of shark attacks is probably lower than you imagine. Hammerhead Sharks Facts Facts about Hammerhead Sharks 7: the endangered species. A hammerhead shark uses its wide head to trap stingrays by pinning them to the seafloor. Hammerhead sharks can swim up to 25 km/h (15 mph). Although the researchers didn’t find a difference in sensitivity to the electric fields between a hammerhead and a cone-nosed sandbar shark, the hammerhead was able to search a larger area, which the researchers say would “increase the probability of prey-encounter.” The researchers also noted that the hammerhead was more maneuverable than the sandbar shark. Hammerhead sharks are consummate predators that use their oddly shaped heads to improve their ability to find prey. 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