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The streamlined body of the great hammerhead with the expanded cephalofoil is typical of the hammerhead sharks. Adults can be distinguished from the scalloped hammerhead and the smooth hammerhead by the shape of the cephalofoil, which has a nearly straight front margin (as opposed to arched), with prominent medial and lateral indentations.
The scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark in the family Sphyrnidae. It was originally known as Zygaena lewini . The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head, which is its most distinguishing characteristic.
Most hammerhead shark species are too small to inflict serious damage to humans. [9] Man carrying a hammerhead shark along a street in Mogadishu, Somalia. The great and the scalloped hammerheads are listed on the World Conservation Union's 2008 Red List as endangered, whereas the smalleye hammerhead is listed as vulnerable.
The great hammerhead shark is found in a variety of water depths such as shallow lagoons and coral reefs, and in deeper waters up to 984 feet. ... The scalloped hammerhead is one of the bigger of ...
Bull Shark vs. Hammerhead airs July 3 at 10 p.m. on National Geographic, July 7 at 9 p.m. on ESPN2 and July 28 at 9 p.m. on Nat Geo Wild. If you love to see great whites in different locations ...
Even though hammerhead sharks are a large species, they are generally not a threat to divers. As of 2025, there have only been 18 attacks ever reported, and none were fatal.
The scalloped hammerhead (left) and the smooth hammerhead (right) differ in cephalofoil shape. Upper teeth Lower teeth. The second-largest hammerhead next to the great hammerhead, the smooth hammerhead typically measures 2.5–3.5 m (8.2–11.5 ft) long, with a maximum recorded length and weight of 5 m (16 ft) and 400 kg (880 lb) respectively. [9]
Great hammerhead: Sphyrna mokarran: EN Tropical and subtropical coasts Scalloped bonnethead: Sphyrna corona: NT California and Northwest South American coasts Scalloped hammerhead: Sphyrna lewini: EN Tropical and subtropical coasts worldwide Carolina hammerhead: Sphyrna gilberti? western Atlantic Ocean Scoophead: Sphyrna media: DD