Naria poraria, common name the purple-based cowry or porous cowry, is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.^[1]

Quick Facts Naria poraria, Scientific classification ...

Naria poraria
A shell of Naria poraria
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Cypraeidae
Genus:	Naria
Species:	N. poraria
Binomial name
Naria poraria (Linnaeus, 1758)
Synonyms[1][2]
Cypraea poraria Linnaeus, 1758 (basionym) Cypraea coeca Röding, P.F., 1798 Cypraea kauaiensis Melvill, J.C., 1888 Cypraea kawaiensis Melvill, J.C., 1888 Cypraea albinella Melvill, J.C. & R. Standen, 1895 Cypraea wilhelmina Kenyon, A., 1897 Cypraea vibex Kenyon, A., 1902 Cypraea insignis Dautzenberg, Ph., 1903 Erosaria poraria (Linnaeus, 1758) Erosaria poraria theoreta (f) Iredale, T., 1939 Erronea mbalavensis Ladd, H.S., 1945

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The shells of these quite common cowries reach on average 16–19 millimetres (0.63–0.75 in) of length, with a minimum size of 10 millimetres (0.39 in) and a maximum size of 28 millimetres (1.1 in). The surface of the shell is smooth and shiny, the colors usually range from pale brown to dark brown, with numerous small yellowish spots. The base and the margins are purple (hence the common name), while the teeth are commonly white. In the living cowries the mantle is bright red or purplish, with quite long and slightly tree-shaped sensorial papillae. The lateral flaps of the mantle may hide completely the shell surface and may be quickly retracted into the shell opening. Naria poraria is quite similar to Naria albuginosa, but in the second cowry the purple color of the base is paler.

This species is widely distributed throughout most of the Indo-Pacific, along East Africa (Somalia, Aldabra, Kenya, the Mascarene Basin, Mauritius, Réunion and Tanzania), in the Indian Ocean and in the Pacific Ocean (Chagos, the Seychelles, Sri Lanka, India, Malaysia, Indonesia, New South Wales, New Caledonia, Philippines,^{[citation needed]} Samar Island, Polynesia, Marshall Islands and Hawaii).

Naria poraria lives in shallow intertidal water in tropical reef,^{[citation needed]} mainly at 3–10 metres (9.8–32.8 ft) of depth. It is commonly found on dead corals, under large rocks or in caves.