Shell rather thin, of regular ovate outline, very low conical with apex slightly anterior to mid-length. External sculpture of numerous, fine, flat, somewhat granulose radial riblets.
externally pale brown or yellowish with 8-10 sectors of dark brown mixed with blotches of the background color; inside translucent with external color showing through, except on the callus which is variously tinged with white and brown or pale orange.
common size :
25-35 mm long; up to 37 mm in the Indo-Pacific.
This species resembles some regularly ovate forms of the native Patella caerulea Linnaeus, 1758, but has the inside layer more translucent and never distinctly bluish. The pale blotches interrupting the dark sectors are not seen on all individuals, but when expressed they are diagnostic of Cellana with respect to all native Mediterranean patellids. Knobs on the radial sculpture do not occur on native Patella, with the exception of P. rustica Linnaeus, 1758 which is much taller, sturdier and cannot be confused.
BIOLOGY / ECOLOGY
on rocks near sea level.