The great hammerhead shark has up to several rows of teeth in each jaw, with 24 to 37 in each row. The teeth are triangular with extremely serrated edges, ideal for hunting prey. While the shark constantly loses teeth, it replaces them almost instantly.
The hammerhead uses its sharp teeth to feed on smaller sharks, crustaceans, groupers, herring, sardines, sea cats, squid and other fish. Since stingrays are equipped with venomous stingers in their tails, hammerheads use a unique predatory tactic. Using the side of its head to pin a ray flat to the ocean's floor, the shark rotates its head, taking off large chunks of the ray with its deadly bite.