seen? This small bullet-shaped snail is actually not very
commonly seen. It was seen once on Pulau Semakau. It is a burrowing
snail and more often seen above the ground at night or with the incoming
Features: 3-4cm. Shell thick heavy,
cylindrical bullet-shaped with tall conical spire. White lip ends
at less than half of the shell opening length. The glossy shell with
a wide range of patterns and colours. The shell opening pinkish. The
animal has a large beige body with brownish spots all over. A long
siphon sticks out of the notch in the shell. It does not have an operculum.
Pulau Semakau, Aug 11
Tall conical spire.
White lip ends at less
than half the shell opening length.
Shell opening pinkish.
*Species are difficult
to positively identify without close examination.
On this website, they are grouped by external features for convenience of
olive snails on Singapore shores
Changi, Apr 13
Photo shared by Marcus Ng on flickr.
olive (Oliva oliva) on SeaLife Base: Technical fact
sheet and photo.
Olividae on The Gladys Archerd Shell Collection at Washington
State University Tri-Cities Natural History Museum website: brief
fact sheet on moon snails with photos.
Olividae in the Gastropods section by J.M. Poutiers in the FAO
Species Identification Guide for Fishery Purposes: The Living
Marine Resources of the Western Central Pacific Volume
1: Seaweeds, corals, bivalves and gastropods on the Food and
Agriculture Organization of the United Nations (FAO) website.
- 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.
- Abbott, R.
Tucker, 1991. Seashells
of South East Asia.
Graham Brash, Singapore. 145 pp.