Fig. 1. Uniform and disruptive body patterns on artificial and natural backgrounds. (A) Uniform body pattern on a uniform artificial gray background and (B) uniform sand. (C) Cuttlefish showing disruptive coloration on a black and white checkerboard for which the white checks are roughly equal in size to the animal's White square component (component 2 in Fig. 1E). (D) Disruptive coloration on natural substrate with contrasting dark and light rocks. (E) Disruptive components that were graded (see text for detail on grading method). Light chromatic components: 1, White posterior triangle; 2, White square; 3, White mantle bar; 13, White head bar; 14, White arm triangle. Dark chromatic components: 17, Anterior transverse mantle line; 18, Posterior transverse mantle line; 19, Anterior mantle bar; 21, Paired mantle spots; 22, Median mantle stripe; 29, Anterior head bar. Components were originally described and numbered by Hanlon and Messenger (Hanlon and Messenger, 1988). For consistency, we have listed these numbers here.