Latin name: Sphyrna (genus name, has 8 subspecies)
Although most hammerheads are much smaller than the Great White Shark, the sphyrnate species are among the most feared of shark breeds, and one of the few known to attack humans. The shark has a normal body, but is easily distinguished from other sharks by the fleshy projections from the sides of its head, where its eyes and nostrils are located. The size ranges from the scalloped bonnethead (Sphyrna corona), which is between 60-70 cm long, to the fearsome Great Hammerhead (Sphyrna mokarran), which can reach a length of over 5 meters. Like all sharks, hammerheads give birth to live young.
Hammerhead sharks can be found in tropical waters all over the world, and are usually located close to the shore. They are migratory, and will swim to keep them selves in warm waters that are abundant with fish. The Great Hammerhead is also fond of stingrays, and it will actually use its "hammer" to pin the ray down so that it can take a bite.
Thanks to www.shark.ch for the info.