image of rochia nilotica, common name the commercial top shell, is a species of sea snail, a marine gastropod mollusk in the

animal aquarium aquatic band beach beautiful biology calcareous calcium columella commercial creature crustacean decorative ecology food gastropod hard horseshoe invertebrate isolated marine mature mollusk natural nilotica oblique oceanic offshore pale pinkish rare rochia sea seashell shell shells snail snails species specimen spires striae stripe suture tegulidae thick top triangle tubercle tubular whorls wildlife