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Phylum Mollusca > Class Gastropoda > Family Ellobiidae
Mangrove ear snail
Cassidula sp.
Family Ellobiidae
updated Jul 2020

Where seen? This snail is sometimes seen in our back mangroves, creeping around and on the base of mangrove trees. It breathes air (instead of through gills like most other marine snails). The shell opening resembles an ear.

Features: 2.5-4cm. Shell thick and oval, plain black or dark brown with wide white rim around the front. Underside white around the shell opening. Species of mangrove ear snails are not easy to tell apart in the field.

Sometimes confused with
the Banded mangrove ear snail which has bands on its shell and is pink around the shell opening.

What does it eat? It grazes on algae growing on mangrove trees and on the ground.

Berlayar Creek, Mar 09

Berlayar Creek, Mar 09

Mangrove ear snails on Singapore shores
On wildsingapore flickr

Links References
  • 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.
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