The hammerhead sharks are a group of sharks that form the family Sphyrnidae, named for the unusual and distinctive form of their heads, which are flattened and laterally extended into a cephalofoil (a T-shape or "hammer"). 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. Hammerhead sharks, or sphyrnids, are perhaps the most distinctive and unique of all sharks.
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13 to 20 feet Weight: 500 to 1,000 pounds Size relative to a 6-ft man: Hammerhead sharks are consummate predators that use their oddly shaped heads to improve their ability to find prey. Unique. 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. A hammerhead shark uses its wide head to trap stingrays by pinning them to the seafloor. 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. A shark's lightweight skeleton allows it to put more energy into swimming and use dynamic lift to maintain its place in the water. Senses.. A fisherman holds a freshly cut dorsal fin from a scalloped hammerhead shark (Sphyrna lewini). Every year, humans kill an estimated 100 million sharks. Removing sharks in large numbers can have ripple. Great Hammerhead. Perhaps the most distinctive marine animal of all—the Great Hammerhead has a unique hammer-shaped head that gives it large visual range. Like other sharks, the hammerhead has many teeth. More so than many think—about 17 rows of teeth on the upper and lower jaws. The shark feeds on fish and other marine prey such as octopi.
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Hammerhead shark evolution.. Because most of the skeleton of sharks is made from soft cartilage, it takes special conditions for this to preserve. The teeth, however, are made from a much tougher material known as dentin, which is harder and denser even than bone. While this enables a powerful bite, it also increases the chance that the. The first 1000 people to use the link will get a free trial of Skillshare Premium Membership: https://skl.sh/realscience04211 Watch this video ad-free on Neb. Great Hammerhead sharks are highly circumtropical and found throughout the Southwest Indian Ocean, along the Gulf of Mexico, the Florida coast and nearby Northwest Atlantic, and within the South China sea. Sharks. Science. Great White Shark. More. Scalloped hammerheads swim off the Galápagos Islands. The fish is critically endangered due to demand for their fins and liver oil.
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Why do hammerhead sharks have hammer-shaped heads? A great hammerhead shark's two eyes can be 3 feet apart on opposite sides of its skull. Why do hammerhead sharks have hammer-shaped heads?. It's one of evolution's most eccentric creations: a head shaped like a hammer. Now, a study suggests that the hammerhead shark may have evolved its oddly shaped snout to boost the animal.
The great hammerhead shark is the largest of all nine hammerhead species, reaching an average length of 13.1 feet (4 m) and weight of 500 pounds (230 kg). The longest great hammerhead shark ever recorded was 20 feet (6.1 m) long, and the heaviest great hammerhead shark ever recorded was 991 pounds (450 kg).. Skeletal/Muscular System Circulatory Ststem Habitat Skeletal system The skeleton of a shark is entirely composed up of cartilage. It is a bit alarming, but sharks do not have bones. The fact that sharks have cartilage instead of bone is extremely beneficial. Cartilage is lighter than bone; this helps the shark stay afloat.
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In a series of striking pictures, the study reveals how, roughly halfway through gestation, two-inch-long bonnethead shark embryos suddenly widen their heads. The growing skull pushes out their still-growing eyes at unnatural-looking angles. In the following weeks, the front of the hammer rounds out as it pushes backward toward the gills. With their sandpaper skin, cartilage skeleton, electroreceptive sensors, and rows of dangerous teeth, sharks fascinate many people. However, even within this distinctive group the hammerhead sharks that make up the Sphyrnidae family have attracted a special attention due to the unusual shapes of their namesake heads, called cephalofoils. Several evolutionary benefits of the cephalofoil have.
