The shell size of an adult varies between 28 mm and 40 mm. This whitish shell shows four rows of spiny, pointed nodules with numerous smaller spines between. The oval aperture is yellow. The outer lip is with three to four teeth.
Drupella cornus is a predator of living coral, grazing on the coral tissue. An abundance of this snail can cause significant destruction to the hard-coral cover on reefs. There is a possible link between coral diseases and an outbreak of this snail.[3] The snail is attracted to Montipora corals when these corals secrete montiporic acids[4]
^Antonius, A.; B. Riegl (March 1998). "Coral diseases and Drupella cornus invasion in the Red Sea". Coral Reefs. 17 (1): 48. doi:10.1007/s003380050093. S2CID7260505.
^Masaki, Kita; et al. (2005). "Feeding attractants for the muricid gastropod Drupella cornus, a coral predator". Tetrahedron Letters. 46 (49): 8583–8585. doi:10.1016/j.tetlet.2005.09.182.
^Johnson, Michael S.; Kelley Holborn; Robert Black (September 1993). "Fine-scale patchiness and genetic heterogeneity of recruits of the corallivorous gastropod Drupella cornus". Journal of Marine Biology. 117 (1): 91–96. Bibcode:1993MarBi.117...91J. doi:10.1007/BF00346429. S2CID84621612.
^Fujioka, Y.; K. Yamazato. "Host selection of some Okinawan coral associated gastropods belonging to the genera Drupella, Coralliophila and Quoyula". Galaxea. 2: 59–73.
Spry, J.F. (1961). The sea shells of Dar es Salaam: Gastropods. Tanganyika Notes and Records 56
Drivas, J. & M. Jay (1988). Coquillages de La Réunion et de l'île Maurice