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Phylum Mollusca > Class Gastropoda > Family Olividae
Orange-mouth olive snail
Oliva miniacea*
Family Olividae
updated Sep 2020

Where seen? This large bullet-shaped snail is sometimes seen on some of our shores. A burrowing snail, it is more often seen above the ground at night or with the incoming tide. To find it, look out for the typical trail it leaves on the sand surface as it burrows beneath. It was previously known as Olivia sericea. Oliva irisans may look similar.

Features: 4-5cm. Shell thick heavy glossy, cylindrical bullet-shaped, shell spire flattened with short pointed tip. Shell pattern of closely set zig-zag lines with dark spirals across the whole pattern. Shell opening may be orange on the inner portion. Body large, beige with brown spots all over. A long siphon sticks out of the notch in the shell. It does not have an operculum.

Cyrene Reef, Jun 09

Spire flattened with short pointed tip.

Shell opening often orange or orangey.

Cyrene Reef, Aug 11

Cyrene Reef, Aug 11
 
Orange-mouth olive snail (Oliva miniacea)
Status and threats: This olive snail is listed as 'Vulnerable' in the Red List of threatened animals of Singapore.

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

Orange-mouth olive snails on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


East Coast PCN, Jul 20
Photo shared by Loh Kok Sheng on facebook.

Cyrene Reef, Oct 08

Photo shared by Toh Chay Hoon on her flickr.
 

Acknowledgements
With grateful thanks to JK of SiputKuning.com for identifying this snail on the wild shores blog.


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.
  • Davison, G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore Red Data Book: Threatened plants and animals of Singapore. Nature Society (Singapore). 285 pp.
  • Abbott, R. Tucker, 1991. Seashells of South East Asia. Graham Brash, Singapore. 145 pp.
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