This snail is common on seagrass on sheltered coasts. It has a conical shape, with a maroon and white striped pattern on the body whorl which turns into more of a checkered pattern on the upper whorls. This species resembles Prothalotia pulcherrimus and shares the same habitat, but it can be differentiated by its darker colour, larger size and taller spire. It is also larger than Prothalotia lehmanni, and differs in its slightly more convex whorls.