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Phylum Mollusca > Class Gastropoda > Family Muricidae
Chunky drills
Thais sp.*
Family Muricidae
updated Oct 2016

Where seen? This heavy thick-shelled drill is often seen on large boulders and seawalls. Commonly seen on our all our shores.

Features: 3-6cm. Shell thick and chunky with variable patterns, some with
a spiral pattern of squarish bumps, some with blunt spines. Shell opening wide, pale some with dark markings or patches. The operculum is brown.

Various species of Thais commonly seen on our shores have this kind of shells. They are difficult to distinguish with certainty in the field. On this website, they are grouped by external features for convenience of display.

St. John's Island, May 07

Tuas, Feb 07

Chek Jawa, Apr 08

Sisters Island, Aug 07

Sisters Island, Feb 11

Pulau Ubin, Dec 09

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

Chunky drills on Singapore shores

Photos of Chunky drills for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Pulau Tekukor, Jun 16
Photo shared by Ian Siah on facebook.
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