A known type of hammerhead shark has been discovered to be a distinct species. It was assumed for many years that the hammerheads in South Carolina waters at Bull’s Bay north of Charleston, St. Helena Sound near Beaufort and in the Charleston harbor, were all scalloped hammerheads. However, it was discovered that some specimens had 83 to 91 vertebrae, but scalloped hammerheads have 92 to 99 vertebrae. Therefore they were declared a separate species and named Carolina hammerheads. Aside from the different vertebrae, it is almost impossible to tell the difference between them.