2, flower armor is the curtain clam family cross curtain clam genus animals. The flower armor is a mollusk, about 3 cm long, shell ovoid, light brown, purple edge, shell surface yellowish brown or light purple, densely covered with not too regular purple Bowen-like pattern, and is often a layer of shiny shell skin, concentric growth line is more dense; shell white or slightly purple, the outer shell sinus curved into. It lives on the shallow seabed. Worldwide distribution. The flower nail is small, the shell surface color is generally yellowish brown, the dark pattern of the shell surface is similar to the text but with a concave-convex feeling. The color is dark, the pattern becomes larger, with black, brown, dark brown, dense color or russet composition of spots or patterns.