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Neverita didyma
	A live and active individual of Neverita didyma, viewed from above
	Five views of a shell of Neverita didyma
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Naticidae
Genus:	Neverita
Species:	N. didyma
Binomial name
	Neverita didyma; (Röding, 1798)
Synonyms
	Albula didyma Röding, 1798; Glossaulax didyma (Röding, 1798); Natica ampla Iwakawa, 1900; Natica chemnitzii Récluz in Chenu, 1843 (doubtful synonym); Natica didyma (Röding, 1798); Natica glaucina Lamarck, J.B.P.A. de, 1822; Natica lamarckiana Reeve, L.A., 1855; Natica petiveriana Récluz, C. in Chenu, J.C., 1843; Natica problematica Reeve, L.A., 1855; Natica robusta Dunker, R.W., 1860; Neverita bicolor Philippi, 1849; Neverita didyma (Röding, 1798); Polinices didyma (Röding, 1798); Polinices ephebus Hedley, 1915; Polinices papyracea Busch, von dem in Philippi, R.A., 1845; Polinices (Glossaulax) aulacoglossa Pilsbry, H.A. & E.G. Vanatta, 1908, "1909"; Polinices (Glossaulax) ephebus Hedley, C., 1915;

Neverita didyma, common name the bladder moon snail or moon shell, is a species of predatory sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.^[1]

Subspecies

The size of an adult shell of this species varies between 20 mm and 90 mm. Like all naticids, this species is a carnivore and a predator.

This marine species is found in the Yellow Sea or off the coast of the Madagascar, Mozambique and South Africa of the Indian Ocean.

In Korean cuisine the snails are used in a dish called golbaengi-muchim (moon snail salad).^[2]

^ ^a ^b Neverita didyma (Röding, 1798). WoRMS (2009). Neverita didyma (Röding, 1798) 5. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=568320 on 14 April 2011 .
^
National Institute of Korean Language (30 July 2014). "주요 한식명(200개) 로마자 표기 및 번역(영, 중, 일) 표준안" (PDF) (in Korean).
- 주요 한식명 로마자 표기 및 표준 번역 확정안 공지. National Institute of Korean Language (Press release) (in Korean). 2014-05-02.

Dautzenberg, Ph. (1929). Mollusques testacés marins de Madagascar. Faune des Colonies Francaises, Tome III
MacNae, W. & M. Kalk (eds) (1958). A natural history of Inhaca Island, Mozambique. Witwatersrand Univ. Press, Johannesburg. I-iv, 163 pp.
Branch, G.M. et al. (2002). Two Oceans. 5th impression. David Philip, Cate Town & Johannesburg
Kilburn, R.N. & Rippey, E. (1982) Sea Shells of Southern Africa. Macmillan South Africa, Johannesburg, xi + 249 pp. page(s): 71
Steyn, D.G. & Lussi, M. (1998) Marine Shells of South Africa. An Illustrated Collector’s Guide to Beached Shells. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 50
Hollman M. (2008) Naticidae. In Poppe G.T. (ed.) Philippine marine mollusks, vol. 1: 482-501, pls 186-195. Hackenheim: Conchbooks.
Torigoe K. & Inaba A. (2011) Revision on the classification of Recent Naticidae. Bulletin of the Nishinomiya Shell Museum 7: 133 + 15 pp., 4 pls