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Phylum Mollusca > Class Gastropoda > sea slugs > Family Onchidiidae
Grey-footed mangrove onch slug
Platyvindex sp.
Family Onchidiidae
updated Jun 2020
Where seen? This slug is sometimes seen on mangrove trees trunks and branches on some of our shores.

Features: 2-3cm. Body hard, long or circular, slightly rounded with small bumps arranged in concentric circles. Generally greyish or brown. The underside of the body is grey, it has a narrow foot that has horizontal ridges. Eyes on long thin stalks.

Kranji, Jun 06


Sungei Pandan, Jun 09

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Grey-footed mangrove onch slugs on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Pulau Semakau, Dec 08

Photos shared by Toh Chay Hoon on her 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.

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