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Phylum Mollusca > Class Gastropoda > Family Nassariidae
Lined whelk
Nassarius teretiusculus*
Family Nassariidae
updated Aug 2020
Where seen? This tiny whelk with a fine purple line spiralling around its shell is sometimes seen in sandy areas on our Northern shores.

Features: About 1cm. Shell thick conical with regular ridges, and smoother portion near the front. Shell pattern pale yellow with fine purple spirals. Body pale with white spots, very long siphon and short tentacles. Operculum yellow often with a smudged black line.

East Coast Park, Aug 11

Tanah Merah, Jul 05
Clean up crew: At Tanah Merah, several of these tiny snails were seen cleaning out the shell of a recently demised snail, while a hermit crab hung onto the shell, waiting patiently to try out its potential new home!

Whelks cleaning out a recently dead snail
while a hermit crab waits patiently.
Tanah Merah, Feb 07

East Coast Park, Aug 11

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

Lined whelks on Singapore shores
On wildsingapore 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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