About Gibberulus gibberulus (Linnaeus, 1758)
The adult shell of Gibberulus gibberulus ranges in size from 30 mm to 70 mm. This species has a smooth, gibbous shell. The spire is occasionally varicose, the body whorl has grooves at its base, and the columella is smooth. The interior of the aperture features radiate striae. The shell has mottled, hieroglyphic markings in yellowish brown and white; these markings are often arranged into a small or large number of interrupted revolving bands. The aperture is tinted violaceous, scarlet, or dark purplish brown. This species is distributed across the Red Sea and the Indian Ocean off the coasts of Aldabra, Chagos, Kenya, Madagascar, Mauritius, Mozambique, the Seychelles, and Tanzania. It also occurs in the Pacific Ocean off the coast of Australia, in the territories of Northern Territory, Queensland, and Western Australia.
