Hammerhead sharks prey on a wide array of fish, cephalopods, and crustaceans, but specific prey varies between the different species. The smaller bonnethead sharks have thicker, flattened crushing teeth and often prey on crabs, shrimp, and fishes buried in the sand. Jan 22, · Diet of the Hammerhead Shark Hammerhead sharks as a whole will feed on a wide variety of prey. They feed on fish, smaller sharks, squid, octopus, crabs, and lobsters. Stingrays are widely hunted as a favorite food.
Hammerhead sharkfamily Sphyrnidaeany of 10 shark species belonging to the genera Sphyrna 9 species and Eusphyrna 1 specieswhich are characterized by a flattened hammer- or shovel-shaped head, or cephalofoil.
Hammerhead sharks, or sphyrnids, are perhaps the most distinctive and unique of all sharks. These cartilaginous fishes vary in size; the small scalloped bonnethead S.
Although they are considered one of the most recently evolved groups of sharks, sphyrnids are known to date back in the fossil record to at least the early Miocene Epoch about 23 million to 5. Some authorities believe that this group emerged as early as the Eocene Epoch roughly 56 million to Hammerhead sharks are widely distributed in tropical and temperate marine waters near the coasts and above the continental shelves.
They may migrate seasonally, moving equatorward during the winter and poleward during the summer. Some species, such as the scalloped hammerhead S. Hammerhead sharks are viviparous : they retain fertilized eggs within the body and give birth to live young—from 2 to Smaller species produce just a few young, whereas the great hammerhead will give birth to several dozen. Birth usually occurs during the spring and summer how to treat hernia without surgery, and females will usually give birth in shallow, protected coastal waters.
The young will live in these areas until they reach larger sizes and can safely venture into deeper offshore waters. The peculiar shapes of sphyrnid what is a hammerhead sharks diet appear to serve several purposes. First, the flattened and expanded head acts as a hydrodynamic bow plane that allows the shark to raise and turn its head quickly and sharply.
This feature gives the shark enhanced maneuverability to snap up its prey. Second, the nostril is much expanded compared with other groups of sharks and may provide hammerhead sharks with a keener ability to locate prey and follow scents to their sources. Third, the extended spacing of the eyes may provide a wider field of view; it may also widen the lateral field of view and increase anterior depth perception.
Fourth, the wide underside of the head—with its expanded surface area—houses more electroreceptive organs see sensory receptionwhich are important for detecting the what is a hammerhead sharks diet impulses how to use scanner canon pixma prey. These organs may even detect the electrical impulses of prey buried in sediment.
Lastly, many larger hammerhead species hunt stingrays and other benthic that is, bottom-dwelling fish; they have been observed using the wide margins of their heads to ram and pin prey to the substrate before biting them.
Hammerhead sharks prey on a wide array of fishcephalopodsand crustaceansbut specific prey varies between the different species. The smaller bonnethead sharks have thicker, flattened crushing teeth and often prey on crabsshrimpand fishes buried in the sand.
One species of bonnethead shark, S. In contrast, larger hammerhead sharks possess sizable bladelike teeth and often prey on larger fishes, squidsmall sharks, and stingrays. In fact, the great hammerhead specializes in hunting and eating large stingrays, and some members of this species have been found to have dozens of stingray barbs embedded in their flesh. Most species feed in relatively shallow coastal waters and may even venture into brackish bays and estuaries.
A few species migrate into offshore waters to feed at night. While hammerhead sharks usually are not considered dangerous, there have been several confirmed accounts of large hammerhead sharks attacking people.
Most of those attacked were spearfishing, and it could be that the blood of the speared fish attracted the sharks. Nonetheless, large hammerhead sharks should what is a hammerhead sharks diet respected and avoided by bathers and divers.
Humans often eat the meat of hammerhead sharks; however, consumers should be aware that large specimens may have high levels of mercury and other pollutants. Fins, skin, and teeth are also harvested from sphyrnids, and many larger hammerhead sharks are prized as sport fish.
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External Websites. Articles from Britannica Encyclopedias for elementary and high school students. See Article History. Overview of several shark species, including the lemon, tiger, and hammerhead sharks.
A great hammerhead shark Sphyrna mokarran swimming in a large tank at the Georgia Aquarium in Atlanta, Oct. Learn about the scalloped hammerhead shark. The waters off Malpelo Island, Colombia, are home to a diverse marine life, which includes the scalloped hammerhead shark.
Smooth hammerhead shark Sphyrna zygaena. Get a Britannica Premium subscription and gain access to exclusive content. Subscribe Now. Learn More in these related Britannica articles:. Sphyrinidae hammerhead sharks The most obvious distinguishing feature is the lateral expansion of the head in a hammer or bonnet form, with the eyes at the outer edges.
Teeth large, triangular, smooth edged in some species, serrate in others. Hammerheads have a sinister reputation of…. In many instances, witnesses have seen the assailant clearly enough to determine the species. Fragments of teeth left in wounds of victims or in the planking of boats have often been large enough to provide ichthyologists with the means for precise identification; furthermore,…. The oddest-looking sharks are the hammerheads Sphyrnawhat is a hammerhead sharks diet heads resemble double-headed hammers and have an eye on each stalk, and the wobbegongs family Orectolobidaewhose skin flaps and protective coloration closely resemble the seafloor.
The vernacular of shark names indicate colours in living species, such as the blue Prionace glauca ,…. History at your fingertips. Sign up here to see what happened On This Dayevery day in your inbox! Email address. By signing up, you agree to our Privacy Notice. Be what is the best nail polish remover the lookout for what does focus mean in drama Britannica newsletter to get trusted stories delivered right to your inbox.
Diet / Feeding
Jan 15, · A solitary predator, they primarily feed on cephalopods, crustaceans, stingrays, and even other sharks. Great hammerhead sharks use their Author: Melissa Cristina Marquez. The Great Hammerhead shark preys on a diverse group of marine animals. It usually dines at dawn and dusk and includes sea catfishes, lobsters, tarpon, jacks, squids, sardines, toadfishes, groupers, porgies, crustaceans, crabs, herrings, croakers, boxfish, octopus, porcupine fish, grunts and even smaller sharks (like smoothhounds). Hammerhead Shark Diet: Hammerhead Sharks are known to eat a large range of prey including fish, octopus, squids, stingrays are the favorite one of these sharks. These sharks are often seen swimming at the bottom of the oceans while staking their prey. This is known as the omnivorous species of the shark.
The Great Hammerhead shark preys on a diverse group of marine animals. It usually dines at dawn and dusk and includes sea catfishes, lobsters, tarpon, jacks, squids, sardines, toadfishes, groupers, porgies, crustaceans, crabs, herrings, croakers, boxfish, octopus, porcupine fish, grunts and even smaller sharks like smoothhounds. Above all, the hammerhead loves to feed on rays like cownose rays, guitarfishes, skates, stingrays and eagle rays.
These sharks are also known to stalk grey reef sharks. A research on Hammerhead sharks in the west of Africa reveals that they had filled their stomachs up to 86 percent by feeding on only one species of rays. This specific fish was known as Daisy Stingray Dasyatis margarita. Stingrays have extremely venomous spines and are particularly effective in eluding their predators. They can hide themselves from view by ducking in sand on sandy plains and remain motionless.
However, Hammerhead sharks are still able to catch this prey with ease. They can easily spot its prey thanks to the bizarre-looking hammer on its mouth. The hammer is wide enough and so are the ampullae of Lorenzini. If you have any suggestion or comment or anything you want to share at all, feel free to reach out by emailing at: vvaleedkhalid gmail. A detailed explanation to wild animals and how they adapt to their environment, for everyone, with all kinds of fascinating information presented in a readable format.