It is covered with dark brown to black blunt knobs on a white background with spiral cords between the rows.

[1] This globular shape, tight shell coiling, strong sculpture, a dentate outer lip and narrow aperture offers an added protection against shell-crushing predators, such as fishes and crabs.

It eats only other molluscs, mainly gastropods of the genera Cerithium, Rissoina, Heliacus, and Bittium, and the mussel Hormomya.

[3] Imposex in Morula granulata is a bioindicator for the presence of tributyltin (TBT) contamination (an anti-fouling paint for boats which affects females of the species).

It is distributed in the Red Sea, in the Indian Ocean off Aldabra Atoll, Chagos, East Coast of South Africa, Transkei, Natal, Kenya, Madagascar, the Mascarene Basin, Mozambique and Tanzania, and in the Indo-West Pacific; also off Australia (Northern Territory, Queensland, Western Australia).