The hammer shape of the head is thought to increase maneuvering ability, and also to increase their sensory capacities related to vision, smell, and pressure detection. Dr. Klimley believes their heads may be able to sense very minute variations in the magnetic field. When basalt hardens on seamounts, it makes magnetic ridges and valleys. Hammerheads may use these magnetic fields as a means for navigation. Although other scientist haven't yet confirmed this idea, it has not been dismissed.
Hammerheads feed on other fishes, cephalopods, crustaceans, and turtles.