4 Types of Whorls

"S" type loop whorls and "Interlocking"

not considered double loop whorls

Accidental Whorls (4)

(3%) Combination of two different types of patterns (except plain arches) They have two or more deltas. VERY RARE

Whorls

2nd most common of 3 general patterns. Must be composed of two deltas with a recurve in front of each. Use imaginary line method to determine if the pattern has two deltas. Accidental, Double Loop, Central Pocket Loop and Plain.

A loop whorl with an eye

Also known as Peacock's eye.

Examples of accidental whorls

Loop and whorl, loop and tented arch, loop and central pocket, double loop and central pocket loop.

Double loop whorls (3)

Made up of two loops combined into one fingerprint. Two separate loop formations with two separate and distinct set of shoulders and two deltas.

Plain Whorls (1)

Most common of 4 distinct groups (71%) Must have type lines and minimum of two deltas. At least one ridge that makes a complete circuit. Is in the form of a spiral, oval, circle, or variant of a circle. Must be composed of two deltas with a recurve in front of each. At least one recurving ridge.

Central Pocket Loop Whorls (2)

Must have type lines, minimum of two deltas, one ridge, and tends to make a complete circle. An imaginary line can be drawn between two deltas and does not cross or touch a ridge inside the type lines. One delta may appear to be substantially closer to the center of the pattern than the other delta. (13%)

When taking fingerprints

Whorls, deltas, and areas between them must be captured.