This large hammerhead shark can be distinguished from other hammerhead species by the ‘scalloped' front edge of its hammer-shaped head, having three evenly spaced indentations between the wide-set eyes. The body of the scalloped hammerhead is relatively slim and is coloured brown-grey to bronze above and white below. The first dorsal fin is large but the second is much smaller. Juvenile scalloped hammerheads have darker fins than the adults (2).