• Family: Sphyrimidae
• Genus: Sphyma spp.
• Location: Pacific – Atlantic
• IUCN: BR-CA

Sharks easily identifiable by the shape of their head, whose frontal part is flattened, with lateral expansions of varied shapes (according to the species) and at whose ends the eyes are located. They have an elongated and thin body, with the first high dorsal fin and a strong and heterogenous tail. In Colombia, there are seven species, of which four have been observed in sport diving. Scalloped Hammerhead, Smooth Hammerhead and Great Hammerhead are large animals (adults between 3.5 and 6 m) while the Bonnethead is a small species (adults 1.5 m). All have a brown-gray color on the back and white on the belly, although the pecs below Scalloped Hammerhead are black. In general they differ by the shape of their head like this: