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Phylum Mollusca > Class Gastropoda > Family Potamididae
Girdled horn snail
Cerithidea cingulata
Family Potamididae
updated Sep 2020
Where seen? This small snail is sometimes seen in large numbers in shallow sheltered places and monsoon drains near the sea, also on mangrove mudflats.

Features: 2-3cm. Shell conical with spirals of large beads. Shell opening large and flared with a spout-like tip. Operculum thin, dark with tight spirals.

Sometimes confused with Bazillion snails which does not have flared shell opening and spout-like tip.

Kusu Island, May 07

Flared shell opening with spout-like tip.
What does it eat? It grazes on tiny things growing or settling on the muddy bottom, such as diatoms, bacteria and detritus.

Human uses:
Extensively collected for food and the shell used to make lime in the Philippines.

Girdled horn snails on Singapore shores
On wildsingapore flickr



  • Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore (pdf), Raffles Museum of Biodiversity Research, National University of Singapore.
  • Tan, K. S. & L. M. Chou, 2000. A Guide to the Common Seashells of Singapore. Singapore Science Centre. 160 pp.
  • Abbott, R. Tucker, 1991. Seashells of South East Asia. Graham Brash, Singapore. 145 pp.
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