Nestled within coral on hard reef, valves typically
1/3 exposed with closely-spaced external ribs visible. Color
pattern variable, with neat row of black eye spots along mantle margin
and scattered papillae. The incurrent siphonal opening is lined by
simple or singly branched frills.
Attains 16 inches, but 10 inches is typical. Red Sea to Okinawa and French
Polynesia, excluding Hawaii. |