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Phylum Mollusca > Class Gastropoda > Limpets
Keyhole limpets
Family Fissurellidae
updated Jul 2020

Where seen? These small limpets are sometimes seen under stones, usually alone, on some of our shores.

Features: About 1cm long. Shell conical with fine ribs. It has a hole in the top of its shell, through which wastes are excreted. Body plain white with a pair of feathery gills. Keyhole limpets are true limpets that breathe through gills.

Pulau Tekukor, Apr 13

Pulau Tekukor, Apr 13

Keyhole limpets on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Terumbu Pempang Tengah, May 21
Photo shared by Vincent Choo on facebook.

Terumbu Pempang Laut, Aug 21
Photo shared by Vincent Choo on facebook.



  • Tan Siong Kiat, Lee Yen-ling & Rene Ong. 18 September 2015. A record of Singapore keyhole limpet, Diodora singaporensis. Singapore Biodiversity Records 2015: 131-132
  • 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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