SEM images of mussel surfaces (panels a-d), and rough and smooth synthetic surfaces (e-f).
Adapted from Bers AV; Prendergast GS; Zürn CM; Hansson L; Head RM; Thomason JC. A comparative study of the anti-settlement properties of mytilid shells. Biology Letters. 2006. 2(1): 88–91, by permission of the Royal Society.