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

Features: 4-5cm. Body long, hard with ridges along the centre and small bumps. Generally greyish or brown. The underside is mottled with a yellow or orange margin. The narrow foot is orange with horizontal ridges. Eyes on long thin stalks.

Lim Chu Kang, Aug 05


Sungei Pandan, Jan 11


Kranji, Dec 10


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

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

Other sightings on Singapore shores

Pulau Ubin, Jan 11
Photo shared by James Koh on 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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