The large bamboo snail is a member of the bamboo snail family, with slender shells, a snail tower shape, and multiple layers of snails. The shell is large and sturdy, with a light flesh color and luster. Each layer of the snail usually has black markings, and the lower half of the body has lighter markings. The shell can reach a length of up to 27 centimeters. The shell is heavy, glossy, with a wide body layer and a long shell mouth. The later spiral layer is slightly convex and smooth. Early snail layers had weak longitudinal ridges, a milky white shell surface, and fractured snail bands composed of brown patterns. The shell opening is small, the suture band is obvious, and there is no umbilical hole. The outer lip is not thickened, and the interior is smooth. Twist of the shaft lip. The mouth cap is oval in shape, with the nucleus located below. Lack or only marginal teeth on the tongue. It inhabits shallow sandy bottoms in tropical Indo Pacific waters and is carnivorous.

The outline of the marble taro snail shell is generally straight, with a slight protrusion near the upper part. The shoulders are angular in shape, with strong nodules to almost smooth. The spiral tower is low to quite high, with contours ranging from slightly concave to slightly concave. The secondary snail layer has nodules ranging from strong to weak. The slope under the last layer of suture line of the adult shell is concave, with 2-4 weak spiral grooves and lines, and the spiral carving is often worn out. The snail layer near the bottom quarter to half usually has weak equidistant spiral ribs. The toxicity of the marble cone snail belongs to protein toxicity, similar to that of venomous snakes, but significantly stronger than that of venomous snakes by several times.