Cayenne Keyhole Limpet
Length (mm): 25-51
This is a highly elevated oval shaped shell. The slit-like opening is located near the shell apex which is slightly forward and central. It has distinct radial ribs that form bead like structures when crossed by smaller concentric ridges. This shell is white to gray and sometimes pinkish with a white interior.
New Jersey to Brazil
0 to 100 meters
Herbivore; They graze on algae.
Marine; Coral reefs and intertidal areas among other hard substrates
This animal will move about freely but seems to return to the same "home base" spot everytime after grazing.
MolluscaBase eds. (2021). MolluscaBase. Diodora cayenensis (Lamarck, 1822). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=160265 on 2021-06-23
Rosenberg, G., F. Moretzsohn, and E. F. Garc�a. 29. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579�699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico�Origins, Waters, and Biota. Biodiversity. Texas A&M University Press, College Station, Texas.
Andrews, J. (1971). Seashells of the Texas Coast. University of Texas Press.